Tag: spaceflight

Astra scrubs launch attempt

8:50 am

Capitalism in space: The smallsat rocket company Astra yesterday scrubbed another attempt to achieve its first orbital launch.

They were forced to stand down at T-25 minutes because of a sensor issue. No further details were released, nor have they as yet announced a new launch date.

This launch will be the third for Astra, following two flights from the Pacific Spaceport Complex Alaska in July and November 2018, respectively. These flights were originally believed to be failures. However, Astra stated that the first (designated Rocket 1.0) was successful and that the second (Rocket 2.0) was “shorter than planned.” Neither rocket was designed to reach orbit, as they did not have functioning upper stages.

This scrubbed flight has been dubbed Rocket 3.0, and was part of what the company calls a three launch program aimed at reaching orbit by the third launch. All three launches are orbital, but the company has made it clear that it would not be surprised if the first or even the second failed.

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NASA to buy lunar mined material from private companies

8:43 am

Capitalism in space: NASA yesterday announced that, rather than develop its own lunar sample missions, it wants to buy such lunar mined material obtained from private companies.

NASA on Thursday launched an effort to pay companies to mine resources on the moon, announcing it would buy from them rocks, dirt and other lunar materials as the U.S. space agency seeks to spur private extraction of coveted off-world resources for its use.

NASA Administrator Jim Bridenstine wrote in a blog post accompanying the announcement that the plans would not violate a 1967 treaty that holds that celestial bodies and space are exempt from national claims of ownership.

The initiative, targeting companies that plan to send robots to mine lunar resources, is part of NASA’s goal of setting what Bridenstine called “norms of behavior” in space and allowing private mining on the moon in ways that could help sustain future astronaut missions. NASA said it views the mined resources as the property of the company, and the materials would become “the sole property of NASA” after purchase.

This announcement continues NASA’s transition under the Trump administration from trying to run everything to simply being a customer buying what it needs and wants from the private sector. The idea is smart, as it will guarantee that these samples will be obtained in the cheapest and fastest way possible, while simultaneously sparking the development of a competitive and thriving private industry capable of flying all kinds of planetary missions. The lower costs of these private planetary probes will in turn will spark the creation of a new private sector of customers buying those probes for their own profit-centered needs.

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Boeing strikes deal to avoid harsher ethics probe in NASA’s lunar lander scandal

3:07 pm

Boeing has struck a deal with both NASA and the Air Force in order to avoid a harsher and more extensive ethics probe into its part in the NASA lunar lander contract bidding scandal.

The agreement, signed in August, comes as federal prosecutors continue a criminal investigation into whether NASA’s former human exploration chief, Doug Loverro, improperly guided Boeing space executive Jim Chilton during the contract bidding process.

By agreeing to the “Compliance Program Enhancements”, the aerospace heavyweight staves off harsher consequences from NASA and the Air Force – its space division’s top customers – such as being suspended or debarred from bidding on future space contracts. The agreement calls for Boeing to pay a “third party expert” to assess its ethics and compliance programs and review training procedures for executives who liaise with government officials, citing “concerns related to procurement integrity” during NASA’s Human Landing System competition.

Since Loverro resigned in May, Boeing has fired one company attorney and a group of mid-level employees, three people familiar with the actions told Reuters.

The deal seems like a bureaucratic whitewash, designed to take the heat off the company. And since Boeing as a company has many problems, I remain skeptical that any of this will make a difference in getting things fixed.

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ULA pinpoints cause of Delta launch abort, reschedules launch

2:58 pm

ULA has identified the cause of the launch abort of its Delta 4 Heavy rocket on August 29th, and has now aiming for a launch no earlier than September 18th.

A torn diaphragm in one of three pressure regulators at Cape Canaveral Air Force Station’s Launch Complex 37 caused the computer-controlled scrub just three seconds before liftoff on Aug. 29, ULA CEO Tory Bruno said via Twitter on Wednesday. The engines briefly lit on fire, but the rocket remained firmly on the pad.

“Torn diaphragm (in the regulator), which can occur over time,” Bruno said. “Verifying the condition of the other two regulators. We will replace or rebuild as needed, re-test, and then resume towards launch.” [emphasis mine]

The highlighted words illustrate the less than stellar old space rocket design that the Delta 4 Heavy represents, and that ULA is perpetuating as long as it uses this rocket. Rather than redesign so that these torn diaphragms will no longer be a problem, it appears they will simply make sure this design is tested and works, for this launch. Thus, this issue has the possibility of reappearing in a future launch.

Wouldn’t it be better to upgrade and eliminate such a problem, for good, once it is identified? That appears to be SpaceX’s strategy, and the consequence is that their rockets and spacecraft get increasingly more reliable with time.

Anyway, if ULA’s schedule holds, it means there will be two launches at Cape Canaveral in less than 24 hours, as SpaceX is aiming for another Starlink launch the day earlier.

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Northrop Grumman shuts down Omega rocket program

2:49 pm

Having lost any chance of getting launch contracts or development money from the military for the next five-plus years, Northrop Grumman has chosen to shut down its Omega rocket program.

“We have chosen not to continue development of the OmegA launch system at this time,” Northrop Grumman spokeswoman Jennifer Bowman said in a statement. “We look forward to continuing to play a key role in National Security Space Launch missions and leveraging our OmegA investments in other activities across our business.”

Bowman said the company will not be protesting the U.S. Space Force’s decision to select United Launch Alliance and SpaceX for the NSSL contracts.

This was a typical big space Washington project, aimed solely at getting government contracts, as well as government cash to develop it. The company had no interest in trying to develop it with its own R&D funds in order to garner market share in the general launch market, or even to make it cheaper and more useful to the military than SpaceX’s rocket.

In this sense this is no great loss. What we need is real competition, aimed at coming up with better ideas that will lower cost and increase capabilities. What Northrop Grumman was offering was none of those things. It was fake competition, and of no real value.

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Sharp Martian ridges sticking up from the dust

10:35 am

Sharp ridges sticking up from Martian dust
Click for full image.

Today’s cool image brings us back to the region of Mars where the rover Opportunity journeyed. Taken on June 25, 2020 by the high resolution camera on Mars Reconnaissance orbiter (MRO), the photo to the right, cropped and reduced to post here, focuses on some sharp but low ridges that appear to stick up out of the Martian dust, hinting that they are the tops of some larger feature buried over the eons and only now revealed partly by recent erosion. I estimate that their height is roughly one to two hundred feet or so.

This image is in Arabia Terra, the widest and largest transitional zone region between the northern lowland plains and the southern cratered highlands. It is also only about 200 miles north of where Opportunity landed, and about 230 miles from where it died after almost fifteen years of operation, on the west rim of Endeavour Crater. The overview map below gives the context.
» Read more

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The mystery of rust on the Moon

8:40 am

Link here. The data shows that there is rust on the Moon, in an environment lacking oxygen and water that should make it impossible for it to form.

Yet the rust is there, in the form of hematite, and in fact the data from India’s first lunar orbiter, Chandrayaan-1, has found that the Moon’s nearside has much more of it. To explain how it got there the scientists have come up with a complex hypothesis, first requiring the Moon to be shielded from the Sun’s solar wind by the Earth’s magnetic field for part of its orbit, then having that magnet field transport oxygen from the Earth’s upper atmosphere to the Moon.

This oxygen then reacts with the tiny amount of water that some scientists believe Chandrayaan-1 detected scattered in the Moon’s regolith, the equivalent of its topsoil. The result, according to this hypothesis, is that over time that oxygen and water reacted with the surface iron on the Moon’s nearside, facing the Earth, causing it to rust.

The explanation is elegant, and fits the known facts (though the presence of that water in the lunar regolith remains unconfirmed). It is also complex, which should raise doubts. Regardless, the nearside of the Moon appears to have more hematite than the farside, and the formation of that iron oxide remains baffling.

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A Martian starburst spider

12:44 pm

A Martian starburst spider
Click for full image.

Cool image time! The photo to the right, cropped to post here, illustrates an example of a wholly unique Martian phenomenon, that is not only unique to Mars but is also found only in its south polar regions. The image was taken on July 17, 2020 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

What we are looking at is a permanent spider formation etched into the layered deposits of ice and dirt that cover the widest area surrounding Mars’ south pole. The blue dot just north of Chasma Australe on the overview map below shows the location of these starbursts, on those layered deposits.

Each winter the poles of Mars are blanketed with a thin mantle of dry ice, generally less than six feet thick. When spring arrives and sunlight hits this mantle, it heats the ice and sand on which the mantle lies, and that warmth causes the mantle’s base to sublimate back into gas. Eventually gas pressure causes the mantle to crack at its weak points so the gas can escape. By the time summer arrives that mantle is entirely gone, all of it returning to the atmosphere as CO2 gas.

This sublimation process differs between the north and south pole, due to the different terrain found at each. In the north the mantle mostly lies on ice or sand dunes, neither of which is stable over repeated years. Thus, the mantle weak points do not occur at the exact same place each year, even though they occur at the same type of locations, such as the base and crests of dunes.
» Read more

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Bennu tosses particles from its surface routinely

9:26 am

Objects ejected from Bennu
Tracked particles after August 28, 2019 ejection event.

During OSIRIS-REx’s more than twenty months flying close to the Bennu, scientists have found that the asteroid routinely kicks particles from its surface into space, with these events linked to the asteroid’s day-night cycle.

Since arrival the scientists have seen and tracked more than 300 ejection events, with the almost seven hundred objects detected ranging from about an eighth to a half inch in size. Most moved about eight inches per second, comparable to “a beetle scurrying across the ground.”

The image to the right, cropped, reduced, and brightened to post here, comes from the introductory paper of a suite of papers on the subject, published today.

The timing of the events however reveals the most.

As Bennu completes one rotation every 4.3 hours, boulders on its surface are exposed to a constant thermo-cycling as they heat during the day and cool during the night. Over time, the rocks crack and break down, and eventually particles may be thrown from the surface. The fact that particle ejections were observed with greater frequency during late afternoon, when the rocks heat up, suggests thermal cracking is a major driver. The timing of the events is also consistent with the timing of meteoroid impacts, indicating that these small impacts could be throwing material from the surface. Either, or both, of these processes could be driving the particle ejections, and because of the asteroid’s microgravity environment, it doesn’t take much energy to launch an object from Bennu’s surface.

The link includes a cool movie showing the ejections events and the tracked paths of the ejected particles.

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NASA solicits lunar landers to bid on bringing science instruments to Moon

8:56 am

UPDATE: It appears I misunderstood the nature of this NASA solicitation in my initial post. I have rewritten it to correct it. Hat tip reader Rex Ridenoure.

Capitalism in space: NASA has issued a request from the private companies building unmanned lunar landers to bid on carrying a variety of science instruments to the Moon by ’23.

Initially NASA had indicated it was farming out the design and construction of the lunar landers to private companies, but would have the science instruments designed and built in-house. Since ’19 however NASA has had private companies designing and building these fourteen small science payloads, and is now in the process of determining which private landers will bring them to the Moon.

Though this approach is not very different than past NASA arrangements, what is different is NASA’s public approach. Instead of touting NASA’s part in this work, the agency is touting the work of the private companies.

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Another pit on Mars!

12:53 pm

Isolated small pit on Mars
Click for full image.

It has been several months since my last Martian pit update, mostly caused by the lack of new pit images coming down from the high resolution camera on Mars Reconnaissance Orbiter (MRO). I think this lack is not because of a lack of additional pits or caves but instead signals the completion of a first high resolution survey of the known pits so far found on Mars. A full list of all past pit updates can be found at the bottom of this post.

Regardless, the image to the right, cropped to post here, is the only such image in months, taken on April 14, 2020, and shows a small isolated pit in the lava slopes between the giant volcanoes Arsia and Pavonis Mons. In the full photograph you can see how isolated is this pit. To the limits of the image there are no other such features, the terrain a relatively smooth plain with only some small ridges and and a scattering of what seem to be partly obscured or eroded small craters.

The overview below map shows this pit’s relationship to the volcanoes as well as to all other known nearby pits.
» Read more

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Russia wins spacesuit contract for India’s Gaganyaan manned mission

9:29 am

The new colonial movement: The Russian Zvezda design center in Roscosmos has won the spacesuit contract to build the spacesuits and capsule seats for India’s Gaganyaan manned mission, targeted for a ’22 launch.

It is not surprising that the Russians won this contract. India does not have a lot of time to get the mission off the ground, and needs help. The Russian spacesuits are practical and proven, and are far superior to anything available from NASA. The only other option available at this moment would be the flight suits SpaceX designed for its Dragon missions and flown once. I suspect the Indians want something that has been used and tested more.

Moreover, their astronauts are being trained by the Russians. Better and simpler to have them use the suits the Russians use.

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Strange glacial flow features on Mars?

1:16 pm

Flow features in Reull 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 May 26, 2020, and shows what the scientists dub “Flow features in Reull Vallis.”

These features are typical in the mid-latitudes, and once again suggest the presence of buried glacial ice. The two lobes on the left and right both evoke such flows, as does the material in the drainage channel near the top of the photo.

What is more intriguing however are the strange features in the box. Below is that section, at full resolution.
» Read more

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Sunspot update: More evidence of an upcoming maximum

11:39 am

NOAA last week updated its monthly graph for tracking the Sun’s monthly sunspot activity. As I have done now for every month since 2011, I am posting that graph elow with additional annotations by me to show the past and new solar cycle predictions.

August 2020 sunspot activity

The graph above has been modified to show the predictions of the solar science community for the previous solar maximum. The green curves show the community’s two original predictions from April 2007 for the previous maximum, with half the scientists predicting a very strong maximum and half predicting a weak one. The blue curve is their revised May 2009 prediction. The red curve is the new prediction, first posted by NOAA in April 2020.

August continued the trends seen in the past two months whereby sunspot activity actually exceeded the prediction for this particular month.

Does this mean the prediction of a weak maximum in 2025 will be wrong? Hardly. Sunspot activity in any given month can easily be above or below the prediction, as is obvious if you compare the fluctuations of the last maximum with the prediction. We will not really know if these higher numbers the past few months mean anything until a lot more time has passed, with the gathering of a lot more data.

What is clear is that the activity does herald the next maximum. As in the past few months, the sunspots in August all had polarities that assigned them to the new maximum. While it is not impossible for there to be a handful of sunspots in the next few months that belong to the last maximum, it now appears that the last cycle is pretty much over. We are entering the ramp up to the next maximum, presently predicted by a portion of the solar science community aligned with NOAA to be a weak one.

Above all, the real scientific mystery remains: Scientists do not really yet understand the causes and processes that produce this sunspot cycle. They know without question that it is caused by cycles in the Sun’s magnetic dynamo, but their understanding of the details behind this process remain quite unknown.

Furthermore, the Sun’s importance to the climate on Earth is unquestioned. What we still do not know is its precise influence on long term climate changes. There is circumstantial evidence that it causes cooling and warming of the climate on scales of decades and centuries, but this remains unconfirmed. Once again, our understanding of the details behind the changes in the climate remain quite unknown.

And as always, the devil is in the details.

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India sets early 2021 for launch of lunar lander/rover

9:14 am

The new colonial movement: Chandrayaan-3, India’s second attempt to put a lander/rover near the south pole of the Moon, has been rescheduled for launch in early 2021, delayed approximately six months due to the Wuhan flu panic.

The mission has been delayed by the coronavirus pandemic and the follow-up lockdowns. The launch which was planned for 2020 will now take off for the Lunar surface sometime in early 2021.

Chandrayaan-3 will be a mission repeat of Chandrayaan-2 and will include a Lander and Rover similar to that of Chandrayaan-2, but will not have an orbiter, a statement quoting Singh said. Planned to land on the South Pole of the Moon, Chandrayaan-2 was launched on July 22 last year. However, the lander Vikram hard-landed on September 7, crashing India’s dream to become the first nation to successfully touch down on the lunar surface in its maiden attempt.

The orbiter of the mission is working fine and has been sending data, ISRO had indicated that the third moon mission will utilise the orbiter already in the lunar orbit.

India has literally ceased all launches in 2020, since the arrival of the coronavirus. Moreover, though four launches are listed as targeting September launches, none yet have launch dates. It seems that the fear and terror of COVID-19 has caused India’s large space bureaucracy to shut down, even as I am sure they continue to receive their paychecks.

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Update on Starship development

9:01 am

Capitalism in space: Link here. The update outlines the status of Starship prototypes #5, #6, #7, #8, #9 as well as the first Super Heavy prototype, all of which are being prepped for future tests.

It is expected that #7 will be tested next, a tank pressure test intended to be tested to failure sometime in the next few weeks. The goal here is to obtain the engineering limits of the alloy being used in this particular prototype so that engineers will know how to use it in future builds.

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China launches another remote sensing satellite; crashes 1st stage near homes

8:54 am

The new colonial movement: China today used its Long March 4D rocket to launch another remote sensing satellite.

UPDATE: It appears the first stage booster crashed near a populated area. Footage of the crash can be seen here. Note that the red smoke indicates very toxic materials. Anyone who goes close risks serious health problems.

The leaders in the 2020 launch race:

22 China
15 SpaceX
9 Russia
4 ULA
4 Europe (Arianespace)

In the national rankings the U.S. still leads China 24 to 22.

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China successfully lands its reusable version of the X-37B

10:33 am

The new colonial movement: After only two days in space, China today successfully landed what appears to be its reusable version of the X-37B.

No photos of this spacecraft have been released, nor has China provided any specific information about its shape or design. What we know however suggests it is similar in concept to the unmanned, pick-up-truck-sized X-37B.

Apparently this short flight was to test its ability to reach orbit and then return autonomously. According to the state-controlled Chinese press, it did so.

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The icy Erebus Mountains near where Starship will land on Mars

2:20 pm

Overview of all SpaceX images in Arcadia Planitia

Glacial filled crater in Erebus Montes
Click for full image.

It has been several months since I posted any new photos of the region on Mars which SpaceX considers its prime candidate landing site for its Starship spacecraft/rocket, now under development. The map to the right shows the location of all the images that SpaceX has obtained from the high resolution camera on Mars Reconnaissance Orbiter (MRO) of this landing region, located in the northern lowland plains at the border between Arcadia and Amazonis and to the east of the Erebus Mountains. (See my post on November 13, 2019 for an analysis of the reasoning for SpaceX to choose this region, along with links to each of the numbered images.)

Time to take another look, this time at the very center of the southern cluster of the Erebus mountains. The crater to the right, its location indicated by the tiny red rectangle on the map above, was taken by MRO on May 6, 2020, and shows the typical glacial features scientists find in mid-latitude Martian craters. The floor appears filled with glacial material, with the repeated cyclical flows repeatedly coming down off the north-facing interior rim. That rim would generally be colder and get less sunlight, so snowfall is more likely to pile up there and then flow downward like a glacier, only to sublimate away once it moves out of shadow.

What makes these mountains enticing, only about 400 miles from the Starship landing zone, is not simply what is inside this crater, but what surrounds it. Below is the wider view provided by MRO’s context camera.
» Read more

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InSight has buried its Mole

9:58 am

The Mole buried

Using the scoop on InSight’s robot arm, engineers have now successfully filled the large hole that had formed around the spacecraft’s mole, the drill that has been trying but failing to dig down about fifteen feet so that a heat sensor could measure the internal temperature of Mars.

The image to the right shows the filled hole with the mole’s communications tether snaking away. Earlier this month they used InSight’s scoop to scrape surface material into the hole, as planned in June. According to the mole’s principle investigate, Tilman Spohn,

I had estimated that the first scrape of 12 centimetres swath length would raise the bottom of the pit but leave the Mole sticking out of the sand. By the way, this was the condition for some to agree to the quite controversial ‘scratch test’. As one can see in the image from Sol 600 shown below, that estimate was not quite right. The scraping was a complete success! The scrape was much more effective than expected and the sand filled the pit almost completely. The Mole is now covered, but there is only a thin layer of sand on the back cap.

Their next step will be to use the scoop to press down on the dirt of the filled hole, with the hope this added pressure will keep the dirt pressed against the mole as it hammers downward, thus holding it place with each downward stroke.

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Rocket Lab reveals it also launched its own satellite on August 30th

9:16 am

Capitalism in space: Rocket Lab today revealed that along with placing a customer’s commercial radar satellite into orbit on August 30th, it also launched the prototype of its own satellite during the Electron rocket launch.

The company calls its satellites Photons, but rather than number them it will give each their own name. This particular satellite has been dubbed “First Light.”

The satellite is primarily a technology demonstrator, a way to test Photon’s systems in orbit and show customers what the spacecraft is capable of. First Light will stay up for the next five or six years, if all goes according to plan, Rocket Lab founder and CEO Peter Beck said during a teleconference with reporters today (Sept. 3).

Photon should be attractive to a variety of customers, allowing them to focus on their sensors and other instruments without having to worry about building and operating an entire spacecraft, Rocket Lab representatives have said.

The goal is to offer this smallsat as a platform to those who wish to launch an instrument into space but don’t want to spend the money building the satellite itself. The company also intends to use a Photon satellite for a science mission to Venus in 2023.

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China launches its version of X-37B

9:05 am

The new colonial movement: It appears that China has launched its version of a reusable X-37B mini-shuttle, or at least, that is most likely first guess, based on the meager data available.

China launched a new experimental reusable space vehicle on Thursday from the Jiuquan Satellite Launch Center using a Long March-2F/T – Chang Zheng-2F/T – launch vehicle. Launch from the LC43/91 launch complex, under a veil of secrecy with no official launch photos or even a launch time disclosed.

Chinese media emitted a laconic report referring, that “the test spacecraft will be in orbit for a period of time before returning to the domestic scheduled landing site. During this period, it will carry out reusable technology verification as planned to provide technical support for the peaceful use of space.”

More at the link, though the lack of information, especially the refusal to even give a launch time, strongly indicates China wants to limit knowledge of this spacecraft’s position in space, thus limiting the ability of others to photograph it. What is known however does point to this being a variation of a small reusable unmanned shuttle, like the X-37B.

While once again China has not come up with something new, copying (or stealing) the idea from someone else, having such a vehicle gives them a significant capability. They can now test many different technologies in orbit for long periods, and get them back to Earth for study afterward.

The leaders in the 2020 launch race:

21 China
15 SpaceX
9 Russia
4 ULA
4 Europe (Arianespace)

The U.S. continues to lead China 24 to 21 in the national rankings.

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Bright-tipped perplexing terrain on Mars

1:29 pm

Perplexing terrain on Mars
Click for full image.

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 June 24, 2020, and shows a bit of inexplicable country in Arabia Terra, the widest and largest transition zone region on Mars between the northern lowland plains and southern cratered highlands.

The stuff visible in this image falls into what I call “What the heck?” geology. It is very clear we are looking at a collection of straight and curved ridges and mesas, all of which for some reason are bright at their tips and edges. Some of the curved ridges might be the rims of craters, but only some. Other ridge lines look more like leftovers following a strange erosion process. The problem is that to my uneducated eye I can find little rhyme or reason to these shapes. The mesas and canyon on the image’s right edge might be explained by the erosion processes that create chaos terrain on Mars, but that process does not do a good job of explaining anything else in the photo.

That this uncaptioned image is merely labeled “Arabia Terra” suggests that the scientists involved in getting this image were equally perplexed by it, and could not give it a better description.

The overview map below provides some location context, including how this geology relates to the landing site of Europe’s Rosalind Franklin rover, now scheduled for a 2022 launch.
» Read more

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Another successful Starship prototype hop

11:15 am

Starship prototype #6 in flight

Capitalism in space: SpaceX today successfully completed a 150-meter high hop of its sixth Starship prototype, the second such hop but the first for this prototype. They have now flown two different prototypes, plus Starhopper, all successfully. No flight failures, so far.

Next they will be doing a pressure tank test, to failure, of the seventh prototype. That prototype is using what they think will be a better steel alloy, and they want to find out its limits. I have also heard that they will either fly this prototype again or fly the fifth again, sometime in the next two weeks.

I have embedded a few more images below the fold.
» Read more

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FAA issues Wallops Island launch license to Rocket Lab

9:21 am

Capitalism in space: The FAA has now issued a five year launch license to the smallsat rocket company Rocket Lab, allowing them to launch their Electron rocket from the company’s launch site on Wallops Island, Virginia.

The Launch Operator License allows for multiple launches of the Electron launch vehicle from Rocket Lab Launch Complex 2, eliminating the need to obtain individual, launch-specific licenses for every mission and helping to streamline the path to orbit and enable responsive space access from U.S. soil.

The company hopes to do its first launch from the U.S. before the year is out. It will then have two spaceports, allowing it to double its launch rate.

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SpaceX attempting another Starship hop today

9:15 am

Capitalism in space: Engineers at SpaceX’s Boca Chica facility in Texas are today preparing the sixth Starship prototype for its first 150 meter hop, the second hop of a Starship prototype overall.

The launch window is anytime between 8 am and 8 pm (Central). I have embedded the livesteam below the fold if you wish to watch. Based on previous attempts, they will try for a morning launch before noon, and if there are issues they will recycle and try again in the afternoon.
» Read more

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Northrop Grumman successfully tests SLS solid rocket booster

9:03 am

Northrop Grumman yesterday successfully test fired a solid rocket booster to confirm its design for use on NASA’s long-delayed and overbudget SLS rocket.

The test, completed at the T97 test area at Northrop Grumman‘s facility in Promontory, Utah, took place on Wednesday, September 2, 2020, at 1:05 PM Mountain Daylight Time (19:05 UTC). A single five-segment SLS solid rocket motor with a thrust of up to 3.6 million pounds was ignited, and burned for approximately two minutes.

The booster is an expanded version of the solid rocket boosters used on the space shuttle, with five segments instead of four, and in fact will use previously flown segments from past shuttle launches. Since this booster will not be recovered, these launches will be the last time those segments fly.

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Arianespace’s Vega rocket successfully launches 53 satellites

9:02 pm

Capitalism in space: Arianespace’s Vega rocket tonight finally resumed commercial operations more than a year after a July 2019 launch failure, successfully placing 53 small commercial satellites into orbit.

The leaders in the 2020 launch race:

20 China
14 SpaceX
9 Russia
4 ULA
4 Europe (Arianespace)

The U.S.’s lead over China in the national rankings remains at 23 to 20.

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The longest lava tube in the solar system?

9:19 am

A lava tube on Mars
Click for full image.

Before I delve into today’s cool image, I think it important to explain to my readers why I seem to post so many cool images from Mars. The simple explanation is that Mars right now is where almost all the cutting edge planetary research is taking place, and as a science journalist focused on space exploration I must go to that cutting edge. My dear readers know that I love variety (just consider the evening pauses on Behind the Black), but you can’t ignore the reporting of real discoveries simply to increase the diversity of one’s posts. This is too often what modern news outlets do, which is also why they often miss the real story.

Anyway, today’s cool image to the right, rotated, cropped, and reduced to post here, shows only a small section of what might be the longest lava tube in the entire solar system. Taken on May 5, 2020 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), it shows a string of pits along a meandering depression coming down the northwest flank of the giant volcano Arsia Mons. The image was a follow-up to a July 2014 photo of the same location, and was taken to produce a stereo pair.

The feature strongly suggests a lava tube, with the pits being skylights into the meandering underground void. From top to bottom this section of the tube is a little over three miles long. Since there are lava tubes on Earth far longer, this one image hardly makes this the longest tube in the solar system.

The tube, however, extends off the image both at the bottom and at the top. Not many high resolution images have been taken in this area, so it is therefore hard to say how far the tube extends. Other nearby high resolution images in this area however have found similar lava tubes, which conceivably could be part of the same tube. The overview map below shows the relationship.
» Read more

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