Tag: Portal

SpaceX barrelling like a juggernaut toward first Starship/Superheavy orbital flight this year

9:36 am

Starship #15 about to land
Starship prototype #15 about to land, May 5, 2021

A series of articles at Teslarati in the past two days suggest strongly that the next Starship flight will be on top of a Superheavy first stage, and will likely be the first near orbital flight from Texas around the globe to splashdown softly in the Pacific Ocean northeast of Hawaii.

And it will likely happen this year!

First there was the report from locals in the McGregor, Texas, area indicating that SpaceX has completed a full duration launch burn of a Raptor engine.

A local resident and unofficial SpaceX observer has reported hearing a test of one of Starship’s Raptor engines that lasted more than five minutes at the company’s McGregor, Texas development facilities.

If accurate, it could be the longest static fire of a Starship engine that SpaceX has ever completed in the two years since full-scale Raptor testing first began. Whether it was successful or not, a five or six-minute static fire would also confirm that SpaceX is well into the process of qualifying Raptor for Starship’s first orbital launch attempts.

This burn is somewhat longer than the engine burns during the Starship test hops, and approaches the burn time required for Superheavy during a launch.

Next there was the report describing the newest known engine configurations SpaceX is planning for Superheavy itself, with the first version possibly having 29 engines and a future more powerful version sporting 32.
» Read more

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New Zealand signs Artemis Accords

8:47 am

On May 31st New Zealand became the 11th country to sign the Artemis Accords, designed to bypass the Outer Space Treaty’s limitations on property rights in space.

The full list, according to the NASA press release, now includes Australia, Canada, Italy, Japan, Luxembourg, South Korea, the United Kingdom, the United Arab Emirates, Ukraine, and the United States.

China and Russia have both said they oppose the accords. That such European nations as Germany and France have not joined in suggests their governments have not yet decided what direction they wish to go. Since U.S. policy now requires partners in the Artemis program to sign the accords, one would think that Germany and France and the European Space Agency (ESA) would certainly sign.

They have not, however. Instead, ESA has been in negotiations with China on the subject of space cooperation. If it signs a deal with China it could then become very difficult for it to partner with the U.S.

We might therefore be seeing here the first signs of a true and permanent political split in the alliance between mainland Europe and the United States.

Note too that these political winds signal bad news for Orion. The spacecraft relies on the ESA’s service module for its in-space journeys. If Europe does not sign the accords and instead partners with China, the U.S. will then be faced with either abandoning Orion or finding someone else to build its service module. I suspect that with the coming of cheap, affordable, and efficient private spacecraft, Orion will then die.

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A visit to a crater near the non-face on Mars

1:03 pm

Glacial erosion features inside crater
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on March 12, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It looks down at small six-mile-wide Apt crater in the northern lowland plains of Mars located at about 40 degrees north latitude. The image’s focus were the layers on the crater interior rim as well as the eroded glacial features on the crater’s floor. The color strip suggests [pdf] that the bluish material on the north-facing south interior rim and floor are likely icy, while the tan-colored material seen in the crater’s north half are likely dusty.

While the suggestion of glacial material on the crater’s interior is very typical for many craters in the mid-latitudes, what makes this crater of interest is its location, only a short few miles south of that mesa on Mars that for decades the shallow-minded insisted was a face and proof of an alien Martian civilization.
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A lopsided spiral galaxy

12:54 pm

Losided spiral galaxy
Click for full image.

For a change, today’s cool image is not from Mars, but instead goes deep into space. The photo to the right, reduced to post here, was taken by the Hubble Space Telescope of the relatively nearby spiral galaxy NGC 2276, located about 120 million light years away. As the caption explains:

The magnificent spiral galaxy NGC 2276 looks a bit lopsided in this Hubble Space Telescope snapshot. A bright hub of older yellowish stars normally lies directly in the center of most spiral galaxies. But the bulge in NGC 2276 looks offset to the upper left.

In reality, a neighboring galaxy to the right of NGC 2276 (NGC 2300, not seen here) is gravitationally tugging on its disk of blue stars, pulling the stars on one side of the galaxy outward to distort the galaxy’s normal fried-egg appearance. This sort of “tug-of-war” between galaxies that pass close enough to feel each other’s gravitational pull is not uncommon in the universe. But, like snowflakes, no two close encounters look exactly alike.

The scientists also note that the bright edge along the galaxy’s north and west perimeter mark regions of intense star-formation. In those same regions astronomers six years ago identified the first medium-sized black hole ever found.

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Canada to build a Moon rover for NASA

9:26 am

Canada has signed an agreement with NASA to build an unmanned lunar rover to launch in 2026.

Like NASA,the Canadian government isn’t going to build the rover but will select private companies to design and build for it.

To get the ball rolling on the project, which will explore a lunar polar region, the CSA will soon select two Canadian companies to develop concepts for the rover and its instruments, agency officials added.

Other Canadian gear will reach the moon in the coming years as well, if all goes according to plan. For example, three commercial technologies funded by the CSA’s Lunar Exploration Accelerator Program are scheduled to get a lunar-surface test in 2022 — an artificial intelligence flight computer from Mission Control Space Services; lightweight panoramic cameras built by Canadensys; and a new planetary navigation system developed by NGC Aerospace Ltd.

All three will travel on the first moon mission of the HAKUTO-R lander, which is built by Tokyo-based company ispace, it was announced on Wednesday.

No word on who will launch this new rover, but then it is probably too early for such a decision.

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South Korea signs the Artemis Accords

9:15 am

On May 24 South Korea officially signed the Artemis Accords, joining nine other countries in the agreement designed as a work around of the Outer Space Treaty’s provisions in order to protect property rights in space.

By my count, that makes eight signatories, including Japan, United Kingdom, Australia, Canada, Luxembourg, the United Arab Emirates and Italy.

Essentially, the space-faring nations of the world are splitting into two groups, those who will follow these accords, and those who won’t, led by China and Russia. In a sense, we are seeing a renewal of the Cold War in space, with the western powers that believe in private enterprise and freedom aligned against those whose cultures are authoritarian and ruled from above.

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Ingenuity has issues on sixth flight

9:00 am

On its sixth flight and first intended as an operational scouting mission for Perseverance, the Mars helicopter Ingenuity had problems, requiring an emergency landing.

The trouble cropped up about a minute into the helicopter’s sixth test flight last Saturday at an altitude of 33 feet (10 meters). One of the numerous pictures taken by an on-board camera did not register in the navigation system, throwing the entire timing sequence off and confusing the craft about its location.

Ingenuity began tilting back and forth as much as 20 degrees and suffered power consumption spikes, according to Havard Grip, the helicopter’s chief pilot.

A built-in system to provide extra margin for stability “came to the rescue,” he wrote in an online status update. The helicopter landed within 16 feet (5 meters) of its intended touchdown site.

Engineers are presently trouble-shooting the issue, which they suspect was a “navigation timing error.”

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The strange flows in Shalbatana Vallis on Mars

1:47 pm

Strange flows in Shalbaltana Vallis
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) on March 31, 2021, and shows a series of very distinct arrowhead-shaped sloping ridges interspersed with hollows flowing down from the southern cliff face of Shalbatana Vallis, one of the larger long meandering drainages flowing into the northern lowlands of Chryse Planitia and north of Valles Marineris.

This location is at 5 degrees north latitude, so nothing we see in the picture is likely glacial or evidence of ice.

So what are we looking at? My guess is that the parallel ridges show us a hint of the original slope of alluvial fill. In the past canyon’s south rim or cliff either did not exist, or was much smaller. Instead the ground mostly sloped gently downhill from the plateau to the canyon floor.

Scientists believe that in the far past catastrophic floods of water flowed through Shalbatana. If a massive flood of water off that rim came down that slope of alluvial fill, it could have pushed into that fill and created the hollows, washing the fill down into the canyon floor and leaving behind the ridges in between.

The overview maps below provide the geographical context.
» Read more

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New Chandra mosaic of galactic center reveals spider-web of magnetism

10:19 am

Magnetic field line at the galactic center
Click for full image.

Scientists today released a spectacular panorama of the center of the Milky Way using X-ray data from the Chandra X-ray Observatory and radio data from the MeerKAT radio telescope in South Africa. The panorama reveals a complex web of magnetic field lines emanating out from the supermassive black hole at the center, Sagittarius A* (pronounced A-star).

Below the fold are reduced versions of the full panorama, unlabeled on the left and labeled on the right. The image to the right, reduced to post here, shows just one single example of those magnetic field lines, dubbed G0.17-0.41 and about 20 light years long. This particular filament is the subject of a paper just published in connection with the release of this panorama. From the press release.

A new study of the X-ray and radio properties of this thread by Q. Daniel Wang of the University of Massachusetts at Amherst suggests these features are bound together by thin strips of magnetic fields. This is similar to what was observed in a previously studied thread. (Both threads are labeled with red rectangles in the [full labeled panorama]. The newly studied one in the lower left, G0.17-0.41, is much farther away from the plane of the Galaxy.) Such strips may have formed when magnetic fields aligned in different directions, collided, and became twisted around each other in a process called magnetic reconnection. This is similar to the phenomenon that drives energetic particles away from the Sun and is responsible for the space weather that sometimes affects Earth.

The image below is fascinating to study because of the wealth of detail it includes, not only of magnetic filaments but of other nearby gas clouds and Sagittarius A* itself.
» Read more

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Lockheed Martin and General Motors partner to design manned lunar rover

9:29 am

Capitalism in space: Lockheed Martin and General Motors announced yesterday that they are partnering to design a manned lunar rover, intended for sale to NASA’s Artemis program as well as any other manned lunar missions anyone else should decide to fly.

Lockheed and GM don’t have a NASA contract to build the LTV [Lunar Terrain Vehicle]; the agency hasn’t awarded any such deals yet. But the companies are positioning themselves to be in the driver’s seat when such decisions are made — and when other customers may come along as well.

Obviously the first customer for this moon buggy would be NASA for Artemis. Nor is this the only manned rover being planned. Toyota and Japan’s space agency JAXA are also partnering to build one.

The decision by NASA to use Starship as its lunar lander however has made such a project much more viable. Unlike the lunar landers proposed by Blue Origin and Dynectics, Starship has the payload capacity to carry such things to the Moon, right off the bat. Thus it makes sense now to start designing them and offering them for sale. We should not be surprised if other car manufacturers start proposing their own manned rovers.

Moreover, Starship’s potential also means these rovers could be purchased by others for work on the Moon. If anyone besides NASA decides to hire SpaceX and Starship for their own lunar missions, the Lockheed Martin/GM LTV can also be sold to them. So can the Toyota rover. So could one built by Ford or Mazarati.

Isn’t freedom and capitalism wonderful? Instead of a half century of the nothing that international cooperation and government control brought us in space, private enterprise is suddenly in a burst opening the entire solar system to the world. And don’t expect the pace to slow.

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Starship prototype #15 removed from launchpad; likely not to fly again

8:57 am

Capitalism in space: SpaceX engineers have removed Starship prototype #15, the first to successfully land after a test flight, from the launchpad and rolled back towards their assembly building.

They had already removed its three Raptor engines and landing legs for inspection, but taking the ship off the launchpad strongly suggests the company has decided to not fly it again.

The immediate assumption is that they will now fly prototype #16, built and ready for launch. The article however speculates something far more intriguing:

There’s a limited possibility that Starship SN16 – all but finished – could be sent to the launch site instead of heading straight to the scrapyard, but any testing would necessarily delay orbital pad construction and any flight activity would likely have to expend SN16 in the ocean rather than risk a land landing.

Ultimately, it’s looking more and more likely that SpaceX would rather go all-in on Starship’s inaugural orbital launch attempt, even if that means little to no ground or flight test availability for a few months.

Prototype #20 had been assigned that for that first near-orbital flight. Does this mean SpaceX has decided abandon #16 through #19 and to go straight to that orbital flight? To do this would also mean they have decided to forego any separate testing of Superheavy, and will instead fly it the first time with a Starship upper stage attached. It would also be the only possible way they could meet their July target date for that orbital flight.

If #16 does not move immediately to the launchpad and there are no Starship test flights for the next month or so, it will tell us that this is likely their plan.

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Yutu-2 data suggests Moon’s far side is “bombarded more frequently” than the near side

2:55 pm

The uncertainty of science: According to a new paper, based on ground-penetrating radar data obtained by China’s Yutu-2 rover on the far side of the Moon, scientists now think that the Moon’s more heavily cratered far side is that way because it actually gets bombarded more frequently than the near side.

From the paper’s abstract:

The Lunar Penetrating Radar (LPR) onboard Yutu-2 can transmit electromagnetic pulses to detect the lunar subsurface structure and properties of the regolith. The relative permittivity, loss tangent and TiO2+FeO content of lunar regolith materials at landing site are constrained with LPR data in this paper. The results indicate that the farside may be bombarded more frequently, leading to different regolith accumulation rates on the lunar nearside vs. farside. [emphasis mine]

The data was accumulated during the rover’s first five months on the surface, during those five lunar days. It found that the regolith at the landing site was about 39 feet thick, much thicker than found at the landing site for Yutu-1 on the Moon’s near side. The difference was partly expected because of the nature of the different locations, but combined with other factors the scientists concluded that a higher bombardment rate on the far side would also help explain the difference.

To put it mildly, this conclusion is uncertain. We only have one data point on the far side, and only a few more on the near side. At the same time, the conclusion is somewhat an example of science discovering the obvious. The very first images of the Moon’s far side, taken The Soviet Union’s Luna 3 lunar probe in 1959, showed the surface much more heavily cratered than the near side, with far less areas of smooth mare. Numerous mapping missions since have confirmed that impression.

And it is also intuitive to come to this conclusion. The near side always faces the Earth, which likely acts to intercept many of the type of meteorite hits that reach the Moon’s far side.

This conclusion however is still intuitive, and an honest scientist will not trust it. That this result from Yutu-2 appears to confirms it is therefore nice.

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Glacial flows covering a crater on Mars?

1:43 pm

Partially covered crater by glacial flows?

Cool image time! The photo to the right, cropped and reduced to post here, was taken on March 4, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows an eroded mound that appears to have flows coming off its north and south slopes that fill the surrounding low spots, including half-covering a nearby crater.

The science team for MRO’s high resolution camera chose this picture as their April 28th picture of the day, noting the following:

The objective of this observation is to examine a crater which seems to be in the process of getting covered by flow from a mound. This image, in Protonilus Mensae, may show us characteristics of the covering material: could it be debris-covered glaciers?

Below is a global map of Mars, with this mound’s location in Protonilus Mensae in the northern mid-latitudes indicated by a black cross.
» Read more

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SpaceX successfully launches another 60 Starlink satellites

12:15 pm

Capitalism in space: SpaceX today successfully used its Falcon 9 rocket to place another sixty Starlink satellites in orbit, bringing that constellation to over 1,700 in orbit.

The first stage was making its second flight, and landed successfully on the drone ship in the Atlantic. Both fairings were reused, with one making a record fifth flight. Though the rocket has not yet deployed the satellites as I write this, it is expected in about a half hour and based on past history, should proceed with no problems. If there is an issue I will report it immediately.

The leaders in the 2021 launch race:

16 SpaceX
13 China
7 Russia
2 Rocket Lab
2 ULA

The U.S. now leads China 22 to 13 in the national rankings.

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Viasat asks FCC to block further launches of SpaceX’s Starlink satellites

9:33 am

Capitalism in space? The geosynchronous communications satellite company Viasat has demanded the FCC freeze any further launches of SpaceX’s quickly growing constellation of Starlink satellites.

The company claims a recent modification of SpaceX’s FCC license should not have been granted without a new environmental review of the 4,000+ satellite constellation’s impact.

Viasat is asking the FCC to hit pause on further launches until federal courts can review the legality of the license modification.

Carlsbad, California-based Viasat, which provides broadband services from geostationary orbit (GEO), had petitioned the FCC to conduct an environmental review before granting the license modification as part of the National Environmental Policy Act (NEPA), which currently categorically exempts satellite systems, but says this did not happen despite megaconstellations bringing new considerations for regulators.

Some astronomers had also requested an environmental assessment, worried about how the constellation’s reflectivity affects ground-based telescope observations.

What is really happening here is that Viasat, having discovered its market share is seriously threatened by a competitor, is trying to use the government to squelch that competition. Viasat doesn’t really give a twit about the environmental issues. It is launching its own new three-satellite geosynchronous constellation next year to provide broadband services globally, and Starlink’s success threatens to cut into its profits.

The article also reveals one interesting tidbit about former NASA administrator Jim Bridenstine. During his short three-year tenure heading NASA he aggressively moved to encourage provide competition and private enterprise by transferring the design, construction, and ownership of rockets and spaceships from NASA to the commercial sector.

Now that he is out of the government however he — like most Washington swamp creatures — has discovered his true calling: using his influence to squelch private competition:

In April, former NASA administrator Jim Bridenstine joined Viasat’s board of directors. Bridenstine told SpaceNews in an interview at the time that the threat of megaconstellations to space safety, and the overall space access environment, were among issues on his radar.

Like a ventriloquist’s dummy, Bridenstine upon leaving NASA immediately began mouthing the manufactured concerns of his new patrons at Viasat. To hell with allowing real competition and freedom. It is much more important to manipulate the power of the government to prevent Viasat’s competitors from succeeding. And earn a nice big salary at the same time.

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Roscosmos finally approves ISS module Nauka for launch

9:10 am

After successfully completing its last ground tests, Roscosmos announced today that it has finally approved the launch on July 15th of its next module for ISS, dubbed Nauka.

Nauka’s long road to space began more than a quarter of a century ago, in 1995, with this year’s launch about fourteen years behind schedule. An engineer who started working on Nauka after graduation at the age of 25 would now be a grizzled veteran of 51 and looking forward to retirement in only a few years.

The module will provide the Russian half of ISS a second restroom, greater oxygen and water recycling capacity, and room for a third resident, all necessary additions for the planned two commercial tourist launches Russia has scheduled for the fall.

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Axiom announces astronaut to command its second commercial manned flight

1:30 pm

Capitalism in space: Axiom has announced that retired NASA astronaut Peggy Whitson will command its second commercial manned flight.

Whitson was the first woman to command the International Space Station and the oldest woman to fly in space (57, in 2017). She holds the U.S. record for most cumulative time in space (665 days) as well as the world record for most spacewalks by a woman (10).

Joining her will be 65-year-old John Shoffner, an airplane pilot and a champion car racer.

No word yet on when this flight will take place, but expect them to aim for next year, as soon as possible after Axiom’s first ISS commercial flight in January. Scheduling will also depend on NASA, which is presently working out an ISS scheduling policy to manage the increasing number of private missions being offered.

The flight will likely use a SpaceX Dragon capsule, which means there is room for two more passengers. It is possible that those seats will be filled with the winners of Discovery Channel’s proposed reality show, but they also might be filled by actor Tom Cruise and a movie director, both of whom have expressed interest in filming scenes of a movie on ISS.

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The big cliffs of Gediz Vallis on Mars

11:33 am

The Big Cliffs of Mt Sharp
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on May 21, 2021 by Curiosity’s chemistry camera (ChemCam), normally designed to look at high resolution close-up imagery of nearby objects.

However, it can also be used as what the science team call “a long distance spyglass.” The image to the right is an example, looking at what I think are the distant but steadily approaching big cliffs on the western wall of the canyon Gediz Vallis. Make sure you look close at the shadowed cliff-face, probably several hundred feet high. It is filled with huge rock faces reminiscent of the most stark rock cliffs on the mountains of Earth.

The two images below provide the context, which makes the image even more quite breath-taking.
» Read more

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The arrival of routine flights of commercial space passengers to orbit now makes the meaning of the word “astronaut” very unclear

9:45 am

Link here. Up to now the word “astronaut” has generally been applied to anyone who has flown in space, though its use for the previous space tourists has generally seemed inappropriate.

The arrival this fall of regularly and frequent commercial flights carrying private passengers into space raises the question: What do we call these individuals? Some, such as the companies Axiom and Blue Origin, want to call them astronauts. Others, such as previous space tourists Richard Garriott and former senator and now NASA administrator Bill Nelson, think that word should be reserved for the professionals. Think for example of aviation. You don’t get wings by simply flying on a commercial jet. You have to fly a plane yourself, and do it solo to earn that designation.

In truth, the most likely thing that will happen in the future is that no future space traveler will be called an astronaut. As the article notes correctly,

It might be necessary to retire the term altogether once hundreds if not thousands reach space, noted Fordham University history professor Asif Siddiqi, the author of several space books. “Are we going to call each and every one of them astronauts?”

The term is going to become historical, referring not to those who have reached space, but to those early pioneers to made it possible for everyone else. It carries too much special meaning to assign it to every Tom, Dick, or Harry who simply bought a ticket. It signifies a person who did something special and at great risk, and deserves a special honor because of it.

Neil Armstrong and Yuri Gagarin were astronauts. It seems wrong to call every commercial passenger who follows the same.

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GAO finds more NASA cost overruns in Webb, SLS, and Orion

2:18 pm

GAO graph documenting NASA's big project delays and cost overruns

The annual Government Accountability Office’s (GAO) report on major NASA-led programs has found that the cost overruns and scheduling problems it has documented now for years continued in 2020.

You can obtain the report here. The graph to the left, from the report, summarizes the data quite succinctly.

The cumulative cost overrun of 20 major programs in development, defined as those with total costs of at least $250 million, grew to more than $9.6 billion in the report. Three programs — the James Webb Space Telescope, Orion spacecraft and Space Launch System — account for $8 billion of that total, including $4.4 billion for JWST alone.

SLS and the Exploration Ground Systems program accounted for effectively all of the $1.1 billion in overruns in 2020. … SLS alone accounted for nearly $990 million in cost increases. About two-thirds of that increase came from NASA adopting a GAO recommendation to lower the original baseline cost estimate for SLS to properly account for work that had been shifted to later phases of the program.

The report also documented almost 20 years of cumulative delays, with Webb leading the way with delays of more than seven years. The new report added 37 more months of delays during the last year.

The report, and NASA, laid the blame for many of the more recent delays and cost overruns on last year’s COVID epidemic, but if so those delays were imposed by choice, not necessity, considering how both China and SpaceX moved forward without any delays during the same time period. In reporting on NASA for the last three decades I have found it willing to initiate long delays at the drop of a hat, sometimes for reasons, such as a storm that causes some minor damage, that do not justify either the delay or its length. The COVID panic was just another example of this.

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Sierra Space signs up its first customer for its commercial space station

9:11 am

Capitalism in space: Sierra Space, the newly created space division of Sierra Nevada, announced last week that it has signed an agreement with Redwire, formerly known as Made in Space, to establish manufacturing facilities on its LIFE private space station.

The press release is vague about details, being mostly a sales pitch for encouraging other in-space manufacturing companies to consider partnering with Sierra. This in turn suggests the agreement is nothing more that a statement by Redwire that should Sierra’s station launch, it will then be willing to launch its 3D printing technology to it.

Nonetheless, this agreement lends weight to Sierra’s station proposal, which while plausible still remains somewhat vague as there is no indication on when the company plans to launch it.

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Zhurong rolls onto Martian surface

10:39 am

Zhurong's view of lander after deployment onto Martian surface

The new colonial movement: According to China’s state-run press, the Zhurong rover has successfully rolled off its lander and reached the Martian surface.

The image to the right was taken by the rover’s rear hazard avoidance camera, and shows the lander and the deployment ramps behind Zhurong.

At this moment China has released no other images of the Martian surface, nor have they revealed if they have a precise idea of where the lander actually put down on Mars. This latter information is essential for them to plan the rover’s travels over its 90-day nominal mission.

Nonetheless, it appears Zhurong is functioning perfectly. If all goes right, it will not only complete that 90-day mission but continue on for considerably longer, as have other similar small rovers on both Mars and the Moon.

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Curiosity climbing Mount Sharp

3:13 pm

Curiosity as seen by MRO from orbit
Click for full image.

Today’s cool image, to the right and cropped to post here, was taken on April 18, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Released today by MRO’s science team, it shows the rover Curiosity sitting on top of the 20-foot high rock outcrop the scientists have dubbed Mt. Mercou. The 16,400 foot high Mt. Sharp is to the south, with the rim of Gale Crater about 30 miles to the north.

I have annotated the image to show the rover’s route both before and after the moment when this picture was taken. As the caption at the link notes, the rover is currently working its way up Mt. Mercou, a route that was not initially in their plans, as shown by the wider MRO view below.
» Read more

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ESA proposes constellation of lunar communications and navigation satellites

11:15 am

The European Space Agency is proposing in this decade to build a constellation of communications and GPS-type satellites, dubbed Moonlight, to orbit the Moon.

ESA is asking two industrial consortia in Europe to define what an integrated sat-nav and telecoms system at the Moon would look like.

It’ll include a constellation of at least three, but probably more, positioning-and-relay satellites to give global coverage, and will likely include some surface beacons, too, to augment the accuracy of the navigation signals.

“The target we have at the moment is that the constellation would be able to allow for an accuracy of 100m and probably better. We think we are able to get to 30m in the first instance,” explained Paul Verhoef, the director of ESA’s navigation department.

The two consortiums are the UK’s Surrey Satellite and Italy’s Telespazio.

It also appears the ESA is proposing making this system available to all lunar exploration missions, whether they be part of the U.S.’s Artemis program or China’s lunar plans. If so, it is commercially smart, as they will have plenty of customers to buy their services.

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Delays force ULA to replace Vulcan rocket with Atlas 5 on military launch

11:08 am

Because the development of ULA’s new Vulcan rocket is behind schedule, the Space Force has agreed to allow the company to replace it with an Atlas 5 rocket on a ’22 launch.

That mission, known as USSF-51, was awarded to ULA in August 2020 and is scheduled to launch in late 2022. The company had bid its newly developed Vulcan to fly that mission but the vehicle is not going to be ready on time. As a result, the Space Force agreed to allow ULA to launch USSF-51 on the company’s legacy vehicle the Atlas 5.

…Switching vehicles financially penalizes ULA. According to the company, the Atlas 5 is more expensive than Vulcan. Phase 2 provisions allow ULA to change vehicles but at no cost penalty to the government.

This story however is important because of what it tells us about the state of Blue Origin’s BE-4 rocket engine, required by both Vulcan and Blue Origin’s New Glenn rocket.

At this moment ULA is saying that the first launch of Vulcan is still scheduled for late this year, launching Astrobotic’s Peregrine lander to the Moon. However, for that launch to happen the rocket requires working BE-4 rocket engines for its first stage. In January Blue Origin announced it had finally completed a full throttle test of that engine after problems lasting several years, and would soon be delivering flight-worthy engines to ULA.

It is now late May, and the article at the link revealed this very significant and somewhat shocking detail buried in the text:

Blue Origin in 2020 delivered pathfinder engines for ground tests but has yet to provide a flight-qualified engine for Vulcan’s first flight. A spokeswoman for Blue Origin said May 20 the company is “on track to deliver BE-4 engines this year.” [emphasis mine]

It seems completely impossible for ULA to launch that lunar lander on Vulcan this year if it does not yet have any flight-worthy engines on hand to incorporate and test in the rocket. Worse, it appears that Blue Origin might not deliver those engines for months yet.

This story thus suggests that we will not see launches of either ULA’s new Vulcan rocket or Blue Origin’s New Glenn rocket for a considerable time.

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SpaceX grabbing 90% of the launch contracts to the Moon

10:37 am

Capitalism in space: The announcement yesterday by Firefly that it has awarded SpaceX the launch contract for its Blue Ghost lunar lander mission (scheduled for launch in ’23) is significant because it continues a remarkable pattern of dominance by SpaceX of the lunar launch market.

Right now, of the seven scheduled robot missions to the Moon, SpaceX will launch all but one. The full list, in no particular order:

In addition, SpaceX launched Israel’s Beresheet lander in 2019 on a Falcon 9.

Furthermore, SpaceX has won the contract from NASA for the agency’s first manned lunar lander, using Starship. It has also won the contract to launch the initial components of NASA’s Lunar Gateway space station on a Falcon Heavy.

There are other lunar missions in the works (by Russia, China, and others), but these are all the launches awarded as commercial contracts to private rocket companies in recent years. Thus, of these ten lunar missions, SpaceX has launched or is launching nine. That’s a 90% market share!
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The steep sudden foothill of Olympus Mons

2:27 pm

Olympus Mons on Mars

Today’s cool image starts from afar and zooms inward. The elevation map to the right shows Olympus Mons, the largest volcano on Mars and in fact the entire solar system. About 600 miles across, from the edge to its peak this volcano rises about 54,000 feet, with an actual height relative to Mars’ “sea level” of just under 70,000 feet, more than twice as high as Mount Everest on Earth.

The cross-section of this volcano is so large it would cover almost all of France if placed on Earth. As a shield volcano, it was formed by many many volcano flows that laid down many layers of lava, with some in its northwest quadrant thought to be as recent as 2 to 115 million years ago.

Our cool image today is located at the white rectangle at the southeast edge of this volcano, and illustrates how those many lava flows could create such a large shield volcano with such a large cross section.
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SpaceX begins stacking Superheavy prototype for flight

12:06 pm

Capitalism in space: It appears that the third Superheavy prototype, BN3 (Booster #3), is now being stacked and prepared for the first near-orbital flight of Starship, which SpaceX is still hoping to launch before the end of this year.

SpaceX has at least six BN3 sections – amounting to 22 rings and two of three tank domes – either completed or awaiting integration. The process of stacking BN3 began sometime in the last 7-10 days when SpaceX joined two four-ring sections – including the booster’s common dome, likely pictured above.

SpaceX has mostly completed BN3’s engine section, including a thrust dome with plumbing cutouts for a full 28 Raptor engines. Most recently, what looks like a Super Heavy fuel manifold appeared in Boca Chica. That manifold will attach to the end of a supersized Super Heavy transfer tube – also spotted in work – used to route methane through the liquid oxygen tank to fuel its Raptor engines. Fueling 28 large, high-performance Raptors is no mean feat and requires a rat’s nest of plumbing to feed them more than 15 metric tons (~30,000 lb) of propellant every second at full throttle.

Put simply, a majority of Super Heavy booster BN3’s hardware appears to be ready or almost ready for integration. The eight rings now stacked represent approximately 20% of the rocket’s full height, leaving another 30 or so rings – 54m (~180 ft) – to go.

That flight, the flight plan of which has already been submitted to the FCC, would take off from Boca Chica, circle about three-quarters of the globe, and land in the Pacific to the northwest of Hawaii. While not a full orbit, this flight would demonstrate an orbital capability while allowing for a controlled safe re-entry at a planned location, a wise approach for that first orbital attempt.

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Ingenuity to make sixth flight next week

9:17 am

Future travels for Perseverance and Ingenuity

The Ingenuity engineering team announced today that the Mars helicopter will make its sixth flight next week, flying to a new landing spot while taking images for the Perseverance science team.

Ingenuity’s flight plan begins with the helicopter ascending to 33 feet (10 meters), then heading southwest for about 492 feet (150 meters). When it achieves that distance, the rotorcraft will begin acquiring color imagery of an area of interest as it translates to the south about 50-66 feet (15-20 meters). Stereo imagery of the sand ripples and outcrops of bright rocks at the site will help demonstrate the value of an aerial perspective for future missions. After completing its image collection, Ingenuity will fly about 164 feet (50 meters) northeast where it will touch down at its new base of operations (known as “Field C”).

The flight will attempt a new speed record of 9 mph, and will also land for the first time in a spot that the helicopter has not scouted beforehand. It will instead be using data from high resolution images from Mars Reconnaissance Orbiter (MRO) combined with its own hazard avoidance system.

Ingenuity will essentially place itself over and in an area where Perseverance plans to go, leapfrogging ahead flight by flight, as shown by the map above (annotated by me from the map available here). The green dot numbered 5 shows the helicopter’s present position, while #6 shows its approximate landing spot after its sixth flight. Perseverance, whose present location is indicated by the blue marker, is generally heading south within the area outlined by the red line, as described during the science team’s an April 30th press conference. The goal in exploring this region is to gain a very robust geological baseline of the floor of Jezero Crater, which scientists believe will be the oldest material the rover should see in its travels.

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