Tag: spaceflight

Lucy update: cause of solar array issue identified

8:49 am

Lucy solar panel graphic

According to the principal scientist for the Lucy asteroid mission, engineers think they have identified what caused one of Lucy’s two fanlike solar arrays to fail to deploy completely.

The +Y array, rather than unfurling a full 360 degrees, instead went 347 degrees. In that configuration, the spacecraft is still generating more than 90% of its expected power. “Power is not an issue for the spacecraft, nor will it be through the entire mission if we have to fly it like it is.”

The arrays unfurl when a motor pulls on a lanyard, swinging one end of the array around and into place. Levison said that the most likely reason the array did not latch is that, for some reason, there was a loss of tension in the lanyard during deployment. That caused it to fall off a spool and wrap around the motor shaft. About 75 centimeters of lanyard remains to be pulled in.

It appears they in April will turn on the array’s motor to try to pull the lanyard in that last little bit. If that doesn’t work, they will then simply leave things as they are, as it appears the array is open enough to give them sufficient power for their mission.

There are risks to that course, however. Because the array is not latched open, it could begin to close, and thus result in less power to the spacecraft. Furthermore, its unlatched state appears to make some planned engine burns too risky.

2 comments

Update on the video game Pioneer 2140CC & its February 1st Kickstarter launch

9:39 pm

With less than a week before the start of the Kickstarter campaign on February 1, 2022 to raise at least $73,000 to pay for producing the video game Pioneer 2140CC (based on my science fiction book, Pioneer), Aaron Jenkin, the game’s producer, tonight sent out an update to the subscribers of the Kickstarter newsletter.

Besides describing the growing interest from our potential audience as well as his recent successes at marketing, Aaron’s the big announcement was the release of the game’s trailer, embedded below:

I was personally quite impressed with this trailer, which Aaron tells me he created himself. It captures perfectly what I tried to say in the book, and does so while adding intelligently the necessary game elements that any video game must have. Pioneer is about the human spirit, faced with the actual dangers that future space explorers will face, not the typical science fiction faux aliens or artificial cartoon character conflicts that are all too common in many sci-fi movies. Space is deadly and alien, and it will be the noblest achievement of humanity to make it possible for humans to live and work there.

If you are interested in supporting the game (as well as buying it when it is published), go to PioneerSpaceGame.com and subscribe to the newsletter for future updates counting down to the February 1st launch.

You might also want to read Pioneer first. It won’t necessarily help you play the game, but it will put you in the right mindset.

Leave a comment

Planetary scientists fight back: “Pluto is a planet!”

6:04 pm

A group of eminent and active planetary scientists have just published a new peer-reviewed paper documenting how moons and asteroids were routinely referred to as planets from Galileo until 2006 when a very small number of scientists at an International Astronomical Union (IAU) meeting decided arbitrarily that the definition must be changed.

That IAU definition, which required an object to have a solar orbit and the vague ability of the object to clear that orbit, somehow made Pluto a non-planet. It has also never been accepted by planetary scientists, who consider it inconsistent, vague, and useless in their research as well as in teaching students about planetary science. I know this attitude is real because of what planetary scientists have told me consistently in many interviews since 2006.

The new paper appears to be part of a new aggressive campaign by planetary scientists to get that IAU definition dumped, and replace it with the definition planetary scientists have been using forever, which is that if the object is large enough for gravity to shape it into a spherical shape, it is a planet. This is still the definition they routinely use when discussing large moons like the Moon or the large Galilean moons of Jupiter or the larger moons of Saturn or Pluto itself.

It also appears, based on information at the link, that this campaign is beginning to make headway. To that I say, Hallelajuh!

20 comments

Mars’ youngest lava flow

1:41 pm

Mars' youngest lava flow
Click for full image.

Today’s cool image is in some ways another version of my last cool image yesterday. Both are in Mars’s volcano country. Both show what appears to be a lava flow.

Yesterday’s image showed the leftover evidence of a confined flow of lava running in a meandering pattern like a river, and was somewhat distant from the biggest nearby volcanoes. Today’s cool image, to the right and rotated, cropped, and reduced to post here, is instead located smack dab on the inside of what is thought to be Mars’ youngest major lava event, the Athabasca flood lava plain, and in fact is near its outlet, when about 600 million years ago it belched out enough lava in just a matter of a few weeks to cover an area about the size of Great Britain.

The overview map below illustrates this.

» Read more

Leave a comment

Ukrainian rocket company signs deal with Portuguese spaceport organization

10:43 am

Capitalism in space: Ukrainian startup rocket company Promin Aerospace has signed an agreement with the Atlantic Spaceport Consortium (ASC), a Portugal organization that is aimed at building launch facilities on Portuguese-controlled islands in the Atlantic.

Promin has raised $500K for what it claims will be “the smallest solid rocket capable of launching a payload into orbit.” ASC meanwhile is presently building a suborbital launch site in the Azores.

How much of this is real is entirely unknown. The reality of both appear to me to be somewhat nebulous. Nonetheless, if successful the partnership will put another new cheap orbital rocket as well as another spaceport on the map.

Leave a comment

Axiom awards construction contract for building Houston space station factory

9:51 am

Capitalism in space: Axiom has awarded its first construction contract for building its space station factory at a Houston industrial park dubbed Spaceport Houston.

Phase I of the Houston Spaceport architecture and engineering design contract was awarded to Jacobs by Axiom Space. This 100,000 sq ft facility will be developed on a 400 acre-site, located within Ellington Airport, at the heart of Space City. Axiom Space, the privately funded space infrastructure developer intends to use this new spaceport to achieve its goal of assembling the first commercial international space station and providing access to low Earth orbit.

The choice by Axiom of Houston for this facility is, at first glance, somewhat puzzling. Once built here Axiom’s large station modules and equipment will then have to be transported to some launch facility, likely Kennedy in Florida. Wouldn’t it have made more sense to build them in Florida, close to where they will be launched?

The explanation lies in politics. Axiom’s management has many close ties to NASA and the Johnson Space Center. Furthermore, Axiom’s first modules will be docked to ISS, run by Johnson. Building in Houston will give Axiom brownie points with these government entities, which will in turn grease the wheels for anything Axiom needs to do at ISS.

2 comments

Strong opposition to new proposed regulation by federal safety board

9:41 am

We’re here to help you! Both the FAA and the rocket industry, led by SpaceX and Blue Origin, have issued detailed written opposition to a proposal by the National Transportation Safety Board (NTSB) that it be placed in charge of all future space accident investigations.

The regulations would require companies conducting a launch or reentry under an FAA license or experimental permit to immediately notify the NTSB in the event of a mishap. The NTSB would conduct an investigation to determine the probable cause and provide recommendations to avoid similar events in the future.

The opposition notes that this will merely duplicate what the industry and the FAA already do. The rocket industry also noted that the NTSB’s present investigation responsibilities are aimed at helping the mature airline industry, not “a nascent industrial sector that is still in development, and is appropriately regulated as such.”

It appears that there is also opposition in the halls of Congress, as two congressmen have expressed their own opposition.

Without doubt the NTSB’s action here has been encouraged by the Biden administration. Democrats always want more regulation to enhance the power of government. Since Biden and his Democratic Party handlers took over, the federal bureaucracy’s effort to regulate and hinder space activities has definitely increased, such as its efforts to block SpaceX’s Starship development at Boca Chica.

Had the NTSB tried to propose this during the Trump administration it would have been quickly quashed. For example, when NOAA tried to claim it had the right to regulate all orbital photography and the Trump administration told them no, in no uncertain terms.

2 comments

Falcon 9 upper stage to impact Moon

9:18 am

A Falcon 9 upper stage launched in February 2015 is apparently now on a course to impact the Moon this coming March.

According to Bill Gray, who writes the widely used Project Pluto software to track near-Earth objects, asteroids, minor planets, and comets, such an impact could come in March.

Earlier this month, Gray put out a call for amateur and professional astronomers to make additional observations of the stage, which appears to be tumbling through space. With this new data, Gray now believes that the Falcon 9’s upper stage will very likely impact the far side of the Moon, near the equator, on March 4.

Grey’s call out for more measurements is because there are uncertainties about this prediction. To prepare for observations of the impact by a variety of lunar orbiters, researchers need better data.

8 comments

NM legislators propose sales tax on Virgin Galactic tourist flights

9:08 am

We’re here to help you: A bi-partisan proposal by two New Mexico legislators would create a 6% to 9% sales tax on any Virgin Galactic space tourist flights that take off from Spaceport America.

“If the flights really became regular, that could be a nice source of income, not only for the state but also from the GRT shared with the local communities,” [one of] the bill’s … sponsors, Democratic Rep. Matthew McQueen, said.

…”I can’t think of a particularly good reason why we wouldn’t tax this activity,” McQueen said.

McQueen might be too stupid to think of a reason, but I can think of dozens, and they are called the many other airport runways across the globe where Virgin Galactic can launch tourists and bypass this tax. The company already has agreements with several.

The stupidity of this legislative proposal at this time is compounded in that Virgin Galactic, the only customer Spaceport America presently has, is struggling badly. It has yet to fly any commercial flights, and is facing investor lawsuits and an aging fleet. Adding a tax on top of these problems could kill it, thus making this bill a perfect example of killing the goose that laid the golden egg, before the goose is even born. Moreover, it will certainly discourage anyone else from launching from New Mexico, especially as there are so many other spaceport options popping up worldwide with no such sales tax.

9 comments

Startup building satellite electric thrusters signs deal with startup building refueling tankers

8:49 am

Capitalism in space: Phase Four, a startup building a new electric xenon thruster for use in satellites has signed an agreement with Orbit Fab, a startup building refueling systems for satellites already in orbit.

Under the agreement announced Jan. 24, the companies will work together to evaluate the refueling potential of traditional electric propulsion propellants like xenon for Phase Four Maxwell engines as well as new propellants like Advanced Spacecraft Energetic Non-Toxic propellant or ASCENT, a monopropellant developed by the Air Force Research Laboratory.

Orbit Fab last year launched its first prototype tanker, successfully testing the refueling port which it wants satellite makers to use so that future tankers can refuel them.

One comment

Webb successfully inserted in final orbital position at the Sun-Earth Lagrange point

3:01 pm

The James Webb Space Telescope today successfully completed a five minute firing of its engines to place it at the Sun-Earth Lagrange point dubbed L2.

Webb’s orbit will allow it a wide view of the cosmos at any given moment, as well as the opportunity for its telescope optics and scientific instruments to get cold enough to function and perform optimal science. Webb has used as little propellant as possible for course corrections while it travels out to the realm of L2, to leave as much remaining propellant as possible for Webb’s ordinary operations over its lifetime: station-keeping (small adjustments to keep Webb in its desired orbit) and momentum unloading (to counteract the effects of solar radiation pressure on the huge sunshield).

Engineers will spend the next three months aligning the segments of Webb’s large primary and secondary mirrors, while they wait for the telescope to cool down to the ambient very cold temperatures required for it to detect the tiny infrared heat emissions from very faint very very very distant objects.

8 comments

U-shaped meandering Martian ridge

1:09 pm

Broad U-Shaped meandering ridge on Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on December 3, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label a “Broad U-Shaped Ridge”. The two black squares are merely areas where no data was gathered.

Is this a fossilized river, of which scientists have identified more than 10,000 in the Arabia Terra transition region between the northern lowland plains and the southern cratered highlands? Arabia Terra however is literally on the other side of Mars, very far away.

The location, as shown in the overview map below, instead suggests that, if this U-shaped meander is a fossilized river, it isn’t one created by water or ice.
» Read more

One comment

Another study says Mars does not have liquid water under its south pole

11:59 am

The uncertainty of science: A new study now claims that the presumed detection of lakes of liquid water under the Martian southern polar ice cap in 2018 was likely wrong, and that the detection was more likely volcanic rock.

The researchers think their conclusion — volcanic rock buried under ice — is a more plausible explanation for the 2018 discovery, which was already in question after scientists calculated the unlikely conditions needed to keep water in a liquid state at Mars’ cold, arid south pole.

“For water to be sustained this close to the surface, you need both a very salty environment and a strong, locally generated heat source, but that doesn’t match what we know of this region,” says the study’s lead author, Cyril Grima, a planetary scientist at The University of Texas at Austin Jackson School of Geosciences.

So my readers know how uncertain all of this is, note that the 2018 discovery of underwater liquid water was later confirmed by other scientists in 2020, then rejected by different researchers in 2021, who claimed it was clay instead.

In other words, the scientists have some inconclusive data that could mean many different things, either water, clay, volcanic rock, or maybe something else that someone hasn’t yet suggested. To really answer the question will require far more data, with some like required in situ on Mars itself.

2 comments

Pseudo-private rocket company in China raises $200 million from Chinese investors

9:04 am

The Chinese pseudo-private rocket company Galactic Energy has successfully raised $200 million from a number of Chinese investors, money that the company will use to develop a mid-size rocket with a reusable first stage.

Though the company is not directly funded by the Chinese government, it is not an independent private company, which is why I label it “pseudo.” Everything it does is closely supervised and approved by the communist government. Also, some of this investment money apparently came from “state-backed investment vehicles,” which in plain language are fronts used by the government to funnel funding to these companies while maintaining the false appearance the companies are entirely private.

The fake nature of this charade has apparently influenced the decisions of real investors:

Incomplete information on funding in China’s emerging commercial space sector suggested that overall investment was lagging just over halfway through 2021, concentrating in fewer players.

It appears that no one outside China is willing to put money behind these companies, and even within China there is hesitancy.

Nonetheless, by letting many such competing operations that can also make profits for investors, China is successfully encouraging some innovation. That Galactic Energy — as well as several others — are planning on building reusable rockets is evidence of that.

4 comments

Astra completes 1st static fire dress rehearsal countdown of Rocket-3 at Kennedy

8:48 am

Capitalism in space: On January 22, 2022, Astra successfully completed at Cape Canaveral the first static fire dress rehearsal countdown of its Rocket-3 rocket.

“Successful static test completed. We will announce launch date and time when we receive our license from the FAA,” said Chris Kemp, founder and CEO of the Alamada, California-based company on Twitter. The company, which was formed in 2016, had been targeting this month for the launch.

The FAA apparently required this successful dress rehearsal before it would provide the launch license. Expect the launch to follow almost immediately after the permit is issued. If successful it will be Astra’s second orbital launch, and the first to carry actual satellites for customers, three cubesats from three different universities and one from NASA’S Johnson Space Center.

One comment

Confirmed: All debris cleared from Perseverance sample tube

8:40 am

Mosaic showing the clearing of debris
Click here and here for original images.

The Perseverance science team today announced in an update that their effort to clear the sample tube of bits of core sample has succeeded, as indicated partly by the two images above that I posted on January 19th.

According to the report, the two small pieces visible bottom center fell out after two small rotations of the carousal. Other pieces however remained, and these were removed as followed:

On Monday, Jan. 17, the team commanded another operation of the rotary percussive drill in an attempt to dislodge more material from the tube. With the tube’s open end still pointed towards the surface, we essentially shook the heck out of it for 208 seconds – by means of the percussive function on the drill. Mastcam-Z imagery taken after the event shows that multiple pieces of sample were dumped onto the surface. Is Tube 261 clear of rock sample? We have new Mastcam-Z images looking down the drill bit into the sample container that indicate little if any debris from the cored-rock sample remains. The sample tube has been cleared for reuse by the project.

The team is now discussing their next step, which could be drilling a new hole at this spot or moving on.

One comment

NASA: No further Artemis Moon landings for at least two years after first in 2025

11:53 am

The tortoise appears to be dying: NASA today announced that there will be a two-plus year pause of Artemis missions to the lunar surface after it completes its hoped-for first manned Moon landing in 2025.

In presentations at a two-day meeting of the NASA Advisory Council’s Human Exploration and Operations Committee Jan. 18 and 19, agency officials said the Artemis 4 mission, the first after the Artemis 3 mission lands astronauts on the moon, will not attempt a landing itself.

Instead, Artemis 4 will be devoted to assembly of the lunar Gateway. The mission will deliver the I-Hab habitat module, developed by the European Space Agency and the Japanese space agency JAXA, to the Gateway. It will be docked with the first Gateway elements, the Power and Propulsion Element and Habitation and Logistics Outpost, which will launch together on a Falcon Heavy in late 2024 and spend a year spiraling out to the near-rectilinear halo orbit around the moon.

Essentially, the Biden administration appears to be switching back to NASA’s original plans, to require use of the Lunar Gateway station for any future lunar exploration, thus delaying that exploration considerably. Do not expect any of this schedule to take place as promised. The 2025 lunar landing will be delayed, as will all subsequent SLS launches for Artemis. The rocket is simply too complicated and cumbersome to even maintain one launch per year, while inserting Gateway into the mix only slows down lunar exploration even more.

NASA officials also revealed that they are limiting their lunar landing Starship contract with SpaceX to only that single planned ’25 Moon mission. For future manned missions to the Moon the agency will request new bids from the entire industry.

NASA’s Human Landing System (HLS) Option A award to SpaceX last year covers only development of a lander and a single crewed flight on Artemis 3. NASA will acquire future landings through a separate effort, called Lunar Exploration Transportation Services (LETS). The goal of LETS is to select one, and possibly more, companies to provide “sustainable” landing services.

The timing of LETS — a draft request for proposals is scheduled for release this spring — means there will be a gap of a couple years before the first landing service acquired through that program would be ready. “It’ll be about two years from the Option A award to the LETS award before we’ll have this sustainable lander,” Kirasich said. “It’s a different lander with more aggressive requirements than Option A.”

It appears that Jeff Bezos’ political lobbying efforts have paid off, and that NASA is now reopening bidding so that his consortium, led by Blue Origin, can once again compete for that lunar lander contract. Whether the Bezos’ team will be able to propose anything comparable to Starship is however very questionable.

None of this really hurts SpaceX. Its contract with NASA helps them develop a Starship lunar lander. Then, while NASA twiddles its thumbs building Gateway, it will be free to fly its own lunar missions, selling tickets on the open market. I suspect that — should NASA succeed in landing humans in ’25 — the next American manned landing on the Moon will be a bunch of SpaceX customers, not that second Artemis mission sometime in the late 2020s.

SpaceX of course will also be able to bid on that second lunar landing competition. And it will be hard for NASA not to award Starship a further contract, even if others are competing against it. Starship will be operational. The others will merely be proposed.

32 comments

Latvian/Bulgarian commercial partnership to launch cubesats to monitor space weather

11:30 am

Capitalism in space: Mission Space, a Latvian company, plans to build a constellation of 24 cubesats designed to monitor space weather and solar activity, using cubesats manufactured by the Bulgarian company EnduroSat.

Mission Space plans to make its software model of the near-Earth radiation environment available in mid-2022, before launching its Aurora-1 detectors with EnduroSat in the fourth quarter of the year.

Mission Space was founded in 2020 to offer space weather monitoring as a service. With data supplied by its constellation, Mission Space will provide data and analytics to government agencies in addition to establishing a cloud-based platform to help commercial satellite operators prepare for solar storms, assess risks and monitor radiation levels.

EndoroSat already has five satellites in orbit, with ten more planned for launch in the next two years.

I think that both these companies demonstrate that a modern satellite business truly can be started in someone’s garage. Because cubesats are so small and are also somewhat standardized, you don’t need a large facility to build them.

Leave a comment

SpaceX’s Starship gets Air Force point-to-point cargo study contract

10:46 am

Capitalism in space: The Air Force Research Laboratory (AFRL) has signed a $102 million five year contract with SpaceX to study the practicality of using its Starship spacecraft as a method for transporting large cargo point-to-point on Earth.

[Program manager Greg] Spanjers said the SpaceX work is focused in four areas: collecting data from commercial orbital launches and landings; exploring cargo bay designs compatible with U.S. Transportation Command containers [TRANSCOM] and support rapid loading and unloading; researching landing systems that can operate on a variety of terrain; and demonstrating the heavy cargo launch and landing process.

The emphasis on landing options and interoperability with TRANSCOM containers and loading processes is an important element of the project, Spanjers noted, because the department’s vision for how the point-to-point capability could be used is broader than just the commercial business case. While companies are primarily interested in delivering cargo to and from established sites, the military wants to deliver supplies and humanitarian aid to locations that may not have spaceports.

This contract is in many ways similar to NASA’s manned Starship lunar lander contract. Both provide SpaceX some cash for developing a different version of Starship, even as the bulk of development money for building Starship comes from the private investment community.

22 comments

NRO to buy radar data from private companies

10:37 am

Capitalism in space: The National Reconnaissance Office (NRO) has signed contracts with five commercial companies to purchase the Earth radar data that they produce to see if that data will be useful for future reconnaissance and surveillance.

The National Reconnaissance Office announced Jan. 20 it has signed agreements with commercial radar imagery providers Airbus U.S., Capella Space, Iceye U.S., PredaSAR and Umbra.

These agreements are study contracts that give the NRO access to the data collected by these companies’ synthetic aperture radar (SAR) satellites, and are intended to help the agency better understand the quality of commercially available imagery. “We know that users across the national system for geospatial intelligence are eager to explore commercial radar, and these contracts will allow us to rapidly validate capabilities and the benefits to the national mission,” NRO Director Chris Scolese said in a statement.

Essentially, NRO is looking to see if it can fill some of its radar data needs from inexpensive privately built satellites, rather than build and launch its own very costly radar satellites. The agency is already doing the same with commercial optical data.

Leave a comment

Debris from Russian anti-sat test just misses Chinese satellite

10:28 am

A Chinese satellite was almost destroyed on January 18th when a piece of debris from Russia’s November 15th anti-satellite test zipped past at a distance of less than a few hundred yards.

Expect more such events in the coming years.

This quote from the article I found somewhat ironic:

In an article from Beijing tabloid Global Times Jan. 20, cited experts stated that further close encounters cannot be ruled out. “Currently, they keep a safe distance but the chance for these two getting close in the future cannot be excluded,” said space debris expert Liu Jing.

Aerospace commentator Huang Zhicheng, told the publication that the growing issue of space debris should be addressed, including through international legal mechanisms. “It is not only necessary to conduct research on experimental devices or spacecraft to remove space debris, but also to formulate corresponding international laws and regulations on the generation of space debris under the framework of the UN,” Huang said. [emphasis mine]

Since anything published in the Chinese press must be approved by the Chinese government, this statement is essentially what the Chinese government wants said. For China however to demand other nations obey international law and not create more space junk that threatens others is hilarious, considering that China this year will likely launch two rockets whose core stages will crash to Earth uncontrolled, in direct violation of the Outer Space Treaty that China is a signatory to.

Since China doesn’t obey the treaties it signs, why should it expect others to do the same?

5 comments

Contact restored with InSight after dust storm

10:19 am

The InSight science team has regained communications with the lander on Mars following a dust storm that caused it to shut down all operations entirely.

Though the tweet from the science team says the space craft is out of safe mode, that really doesn’t appear to be the case. Safe mode is a condition where a robot ceases all science operations, hunkers down, and awaits further orders. All that has happened here is that the engineers have regained contact after communications were lost on January 7th. No science is being done.

The resumption of communications is excellent news, however. They must now access how much power the lander’s solar panels are generating to see if they can turn InSight’s main instrument, its seismometer, back on. Those panels might be badly covered with dust, preventing operations.

5 comments

Judge clears way for land acquisition for Georgia spaceport

10:11 am

The judge overseeing the lawsuit against the Georgia spaceport that Camden County officials wish to build has ruled that the county can proceed with its deal to purchase land, denying the request to delay it.

It seemed the judge ruled on very technical legal grounds, related to the late date the opponents filed their request.

The spaceport’s future still remains somewhat in limbo, even if the land is purchased. A petition to hold a referendum pro or con, still being checked for the accuracy of its signatures, would require a special county election which the voters would decide.

Leave a comment

Axiom & UK entertainment company propose film studio in space

10:03 am

Film studio balloon

Capitalism in space: Axiom has signed a deal with British-based entertainment company, Space Entertainment Enterprise (SEE) to add an inflatable film studio module to its private commercial space station.

Axiom Space’s modules are to be added to the ISS throughout the second half of the 2020s. SEE-1 would be added along with these components.

Once the ISS program is near its end, the plan is for the commercial segment to be detached to form an independent station.

According to SEE, the spherical studio module is planned to be about 20 feet (6 meters) in diameter once fully expanded in space. Its interior is expected to provide an “unobstructed pressurized volume” that can be adapted for a range of media activities, including film production, music, sports and livestreaming events.

The graphics that accompanied the press release of the British company make me very skeptical of it. Posted on the right, it shows this inflatable module as a simple sphere, like a balloon. No manned module ever built, including the inflatable modules launched by Bigelow, has ever looked anything like this. This suggests a certain level of ignorance from the entertainment company which also suggests this project really doesn’t yet exist. The press release and agreement with Axiom seems instead merely an effort to drum up investment capital from investors who know even less.

2 comments

Gehrels/Swift space telescope enters safe mode

3:57 pm

The Neil Gehrels Swift observatory ceased science observations and entered safe mode on January 18, 2021, when one of its six reaction wheels experienced a failure.

It appears the other five reaction wheels, which function as gyroscopes to point the telescope accurately, are working properly. If engineers can’t recover the lost wheel, the telescope will still be able to operate with no problems.

Swift was launch seventeen years ago in order to solve the mystery of gamma ray bursts, which it did most successful. The man who most made the observatory possible, its principal scientist, Neil Gehrels, passed away in 2017, and to honor his memory the telescope was then named after him.

5 comments

Freaky badlands on Mars

1:20 pm

Freaky badlands on Mars
Click for full image.

Cool image time! The photo to the right, rotated and cropped to post here, was taken on November 18, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled merely as “Danielson Crater Outcrops,” it shows us a perfect example of the strangeness and sometimes very forbidding terrain of Mars.

We are looking at the outcrop tops of many tilted layers, worn into curves semicircles with the convex side all pointing to the southwest. In the hollowed concave-side, dust and sand have accumulated and been trapped, sometimes forming small ripple dunes when there is enough space for the wind to get inside, as seen in the picture’s lower right.

Danielson Crater is 41 miles in diameter. The overview map below provides the context.
» Read more

4 comments

NATO issues new space policy filled with blather

11:11 am

NATO on January 17th published a new space policy document that with a great deal of bureaucratic blather essentially says that space is important, NATO’s enemies threaten those assets, and NATO recognizes these facts.

You can read the full document here.

This is obviously a policy document so we should not expect it to lay out proposed or planned operational projects. At the same time, it is so filled with generalizations it really says very little. In a sense, the blather is designed to hide how little it says, besides the very obvious or the most common sense goals, such as for example making sure the equipment of all of NATO’s partners is compatible with each other. To give you a flavor, here is one quote:

NATO will identify and, if necessary, develop appropriate mechanisms, based on voluntary participation, to fulfil and sustain requirements for space support in NATO operations, missions and other activities in the above functional areas. Allies’ capabilities, and, if necessary, trusted commercial service providers, should be leveraged to meet these requirements in the most secure, efficient, effective and transparent manner.

In plain English, NATO wants the cooperation of both private and government space entities to make sure it can function fully in space. As I said, stating the obvious.

The language actually tells us more about the foggy and inefficient thinking among DC and Pentagon bureaucrats. They can’t write clearly because they really don’t think clearly.

Still, the policy outlined essentially commits NATO to support a thriving infrastructure in space, from both the private and governmental sectors. The policy’s strong apparent support for “voluntary” private space is especially encouraging.

The policy’s position against aggressive actions by others, such as Russia and China, is also somewhat encouraging, though its expression in such mealy-mouth language suggests a fundamental lack of commitment that could be worrisome. Russia’s response to this new policy statement was not so vaguely put:

Russian Foreign Ministry Spokeswoman Maria Zakharova took NATO to task over its space policy paper at a briefing on Thursday, branding it as slanted and incendiary. According to her, the document entitled NATO’s Overarching Space Policy, which was published on January 17, covers the Western-led bloc’s priorities in space. “The document is one-sided and in fact incendiary as it is based on destructive beliefs of the US-led NATO members who have an important role in space,” Zakharova emphasized.

I suspect, based on Zakharova’s comments, that Russia has determined from the new policy statement that NATO’s policy is weak, and that Russia can therefore continue to push the envelope against it and the western powers, just to find out exactly how much it can get away with.

3 comments

Yutu-2 scientists find soil “cloddy” during its journey

10:46 am

Chinese scientists today published a paper describing results from Yutu-2’s two year journey on the far side of the Moon, with the most interesting discovery being that the soil is “cloddy” there.

They found that the bearing property of the regolith is similar to that of dry sand and sandy loam on Earth, stronger than the typical lunar soil of Apollo missions.

But they estimated, based on the cloddy soil observed in Yutu-2’s wheels, that the soil there is stickier than the landing site of its predecessor Chang’e-3 which soft-landed on the moon’s Bay of Rainbows in Dec. 2013, according to the study.

The researchers attributed the increased soil cohesion to the higher percentage of agglutinates in the regolith, which make the soil particles more likely to hold together when ground by the wheels.

Since the blocky soil has adhered onto the rover’s wheel lugs instead of its meshed surface, they suggested that the lug’s surface could be coated with a special anti-adhesion material in future missions to improve the machine’s ability of traction.

The rover also traveled by the number of small and relatively fresh secondary craters.

Yutu-2 continues to operate. It is at present in hibernation during the lunar night, and will resume operations when the Sun comes up in about a week or so.

Leave a comment
1 … 151 152 153 154 155 … 477