Tag: spaceflight

The Viking landers and its possible discovery of extraterrestrial life

9:37 am

Link here. One of the scientists involved in the Viking project has written a memoir of her experience, and the article interviews her.

Patricia Straat served as co-experimenter on one of the most controversial experiments ever sent to Mars: the Labeled Release instrument on the Viking Mars landers. The experiment’s principal investigator, Gilbert Levin, insists to this day that the project found extraterrestrial life. Most scientists doubt this interpretation, but the issue has never been fully settled.

Read it. It illustrates how uncertain science can be, even when an experiment produces a result that everyone involved dreamt of. As Straat notes,

The results met the pre-mission definition of a positive life response. But of course as soon as we got it everyone came up with alternative proposals to account for the results nonbiologically.

The problem was that though their experiment found evidence of life, none of the other Viking experiments did. Most significant was the apparently complete lack of organic material (based on carbon) in the soil.

To this day, no one has a good explanation for these results on Viking. The results remain a mystery, one that really will only be solved when we can return to Mars in force, and find out what it is really like.

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Global map of Bennu

9:26 am

Global map of Bennu

The OSIRIS-REx science team today released a global map of Bennu, compiled from images taken in December.

The map is above. It was released with no commentary. In comparing it with this global map of Ryugu, created by the Japanese probe Hayabusa-2, I am struck by how much both asteroids resemble each other.

This fact is in many ways a first. Since the first planetary probes left Earth in the 1960s the one reliable expectation that has consistently proven true is that no planetary object, be it planet, dwarf planet, moon, asteroid, or comet, was going to resemble any other planetary object. Each has been entirely unique, and unique in very startling and obvious ways.

Ryugu and Bennu represent the first planetary objects that actually look pretty much the same. Scientist will of course be able to note differences, but overall these objects clearly belong to a specific class of asteroids, which in this case is the rubble pile.

In a sense, this similarity marks a significant advancement in our knowledge. Up until now, we had observed so few objects that our knowledge base wasn’t large enough to start seeing patterns within our general classifications of planet, asteroid, or comets. That is now finally changing.

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Boeing confirms delay till August for first unmanned Starliner launch

10:17 pm

No surprise here: Boeing today confirmed that it is delaying until August for first unmanned Starliner test launch.

A statement issued by Boeing on Tuesday confirmed previous reports that the company’s CST-100 Starliner spacecraft, designed and built under a $4.2 billion contract from NASA, would miss its previous target launch date for an unpiloted test flight to the International Space Station in April. NASA and industry sources have said for months that an April launch date was not feasible, but NASA and Boeing had not officially published a revised schedule since early February.

The first Starliner test flight with astronauts on-board was previously scheduled for August. In Boeing’s schedule update released Tuesday, the company only said it expects the Crew Flight Test to occur “later this year,” but sources said the Starliner could fly with astronauts in November, at the earliest.

It appears that the fuel leak during a thruster test in June of last year has been the main cause of the delay.

None of this should effect SpaceX, which is primed to fly its mission during the summer. It does however cause more problems for Boeing, which is now also faced with pressure to finish NASA’s SLS rocket, bogged by years of delays and cost overruns.

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More Martian Pits!

1:11 pm

More pits on Mars!

As I said in my last post in February showing recent pit discoveries on Mars, I could almost make this a monthly series. In the March image download from the high resolution camera of Mars Reconnaissance Orbiter (MRO) were three (maybe four) more pits, all likely skylights above lava tubes and all located near the giant volcano Arsia Mons in the region dubbed the Tharsis Bulge. The image to the right shows all three, with a possible fourth just northwest of pit #2 and visible in its full image. For the full images of the other two pits go here (#1) and here (#3). In all three cases, click on the “black & white map projected” link to see the full image with scale.

Overview map

The overview map on right shows where these three pits are located. If you compare this map with my previous overview maps from November 12, 2018 and February 22, 2019 you can see that while these pits are all found on the volcanic slopes surrounding Arsia Mons, they are all different pits. Moreover, the ten pits listed in these three posts are only a small sampling of the more than hundred already found.

Whether these pits are deadend sinks or skylights into underground lava tubes that connect is at this point unknown. It would be a reasonable speculation to assume that some are deadends, and some link to extensive tubes of varying lengths. It would also be dangerous. Mars is alien. While the geology will be based on the same physical laws found on Earth, the lighter gravity is going to produce things differently.

The three images above however do show some intriguing details.
» Read more

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India’s Chandrayaan-2 lunar lander delayed until May

9:10 am

The new colonial movement: India has once again delayed the launch of its Chandrayaan-2 lunar lander, pushing the launch back to May.

Previously they had said they’d launch in mid-April.

The article implies that the month delay has to do with scheduling the lander’s arrival so that it arrives at the best time during the long lunar day.

This mission was originally set to launch in April 2018, then October 2018, then January 2019. Because of these delays, Israel’s Beresheet lunar lander leap-frogged them to the Moon, and now stands poised to make Israel the fourth nation to achieve a lunar landing, beating India.

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Beresheet makes course adjustment just prior to entering lunar orbit

8:59 am

Earth as seen by Beresheet

The Israeli privately-funded lunar lander Beresheet yesterday completed a one-minute engine burn to adjust its course slightly in preparation for entering lunar orbit on April 4.

This morning’s 72-second-long burn helped make some “final adjustments” ahead of capture into lunar orbit, mission team members said in an update this morning. It’s unclear if any further such tweaks will be needed. “The teams are assessing the results to determine if another alignment will be required before Beresheet enters the lunar orbit this Thursday,” project team members said.

The image to the right was taken by Beresheet of the Earth during its last close approach on March 31. It appropriately shows the Middle East, with the Arabian peninsula visible just below center.

The landing is still scheduled for April 11.

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Vector delays next test launch until June

8:56 am

Capitalism in space: Vector Launch has now delayed its next suborbital test launch three months to June.

Previously they had hoped to get this suborbital test launched in March/April. The company has not set any firm date in June, and cautions that further delays should not be unexpected. Assuming this suborbital launch happens this summer, they then hope to get their first orbital rocket launched by the end of the year.

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Yutu-2 and Chang’e-4 awake for fourth lunar day

8:43 am

The Chinese rover Yutu-2 and lander Chang’e-4 were awakened on March 30, 2019 to begin work for their fourth lunar day on the surface of the Moon’s far side.

The rover was designed to last for three lunar days, but much like NASA missions that regularly outlive their initial mandates, Yutu 2’s mission may stretch on longer, the Chinese space agency hopes. (The current rover’s predecessor, Yutu, lost its roving ability on its second day on the moon.)

The China Lunar Exploration Program, which heads up the mission, has not provided any details about its scientific plans for the fourth day of Chang’e 4, which is focused on exploring the far side of the moon and how it differs from the near side.

Based on the images taken by Lunar Reconnaissance Orbiter, it appears they will be heading west, following the smoothest route away from Chang’e-4. This will place Yutu-2 in an area of small craters.

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Mars Express confirms Curiosity 2013 methane detection

8:40 pm

The uncertainty of science: The Mars Express science team today announced that a reanalysis of the orbiter’s data showed the same spike spike of methane detection as seen by Curiosity on June 15, 2013.

The study exploited a new observation technique, allowing the collection of several hundred measurements in one area over a short period of time. The teams also developed a refined analysis technique to get the best out of their data.

“In general we did not detect any methane, aside from one definite detection of about 15 parts per billion by volume of methane in the atmosphere, which turned out to be a day after Curiosity reported a spike of about six parts per billion,” says Marco Giuranna from the Institute for Space Astrophysics and Planetology in Rome, Italy, the principal investigator for the PFS experiment, and lead author of the paper reporting the results in Nature Geoscience today.

“Although parts per billion in general means a relatively small amount, it is quite remarkable for Mars – our measurement corresponds to an average of about 46 tonnes of methane that was present in the area of 49 000 square kilometres observed from our orbit.”

Ten other observations in the Mars Express study period that reported no detections at the limit of the spectrometer’s sensitivity corresponded to a period of low measurements reported by Curiosity.

The data, along with their estimate about the source location for the methane, suggests that this was a geological event, not the result of biological life. They think the methane was trapped in ice-filled fissures, and released when that ice either broke or melted. Whether the methane itself was formed by past microbial life sometime in the past remains completely unknown.

To put it mildly, there are a lot of uncertainties in this result.

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NASA head says that Falcon Heavy remains a future option for Orion

4:56 pm

At an agency meeting for employees NASA administrator Jim Bridenstine reiterated that NASA is still seriously considering the use of SpaceX’s Falcon Heavy for future Orion lunar missions instead of SLS.

Bridenstine then laid out one scenario that has huge implications, not for a 2020 launch, but one later on. Until now, it was thought that only NASA’s Space Launch System could directly inject the Orion spacecraft into a lunar orbit, which made it the preferred option for getting astronauts to the Moon for any potential landing by 2024. However, Bridenstine said there was another option: a Falcon Heavy rocket with an Interim Cryogenic Propulsion Stage built by United Launch Alliance. “Talk about strange bedfellows,” he mused about the two rocket rivals.

This plan has the ability to put humans on the Moon by 2024, Bridenstine said. He then emphasized—twice—that NASA’s chief of human spaceflight, William Gerstenmaier, has yet to bless this approach due to a number of technical details. His reservations include the challenge of integrating the Falcon Heavy rocket in a horizontal position and then loading Orion with fuel in a vertical configuration on the launchpad. The Falcon Heavy would also require a larger payload fairing than it normally flies with. This would place uncertain stress on the rocket’s side-mounted boosters.

All the problems outlined in the second paragraph are the result of bad past management at NASA. Just as you design your rocket based the rocket engines you have — in order to save time and money — you design your capsule and manned vehicles based on the rockets that are available. NASA did not do this. It built Orion in a fantasy la-la land, without addressing the real world rocket options available. Now it has to either reconfigure, or get SpaceX to rethink the Falcon Heavy. Neither option will be cheap.

Regardless, Bridenstine’s statement is another shot across the bow to the porkmeisters in Congress. SLS is on shaky financial ground. It cannot compete in price with the commercial options. More significantly, it cannot come close to matching the launch rates of the private rockets. In the time NASA could put together one SLS launch, SpaceX could likely fly five to ten Falcon Heavies, and still do it for less money overall.

SLS is now tasked with a December 2020 deadline for launching that first unmanned test flight. Should it fail to meet that date, the political battle lines are now being laid for replacing it.

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Circular feature on Mars?

2:52 pm

A circular feature on Mars?
Click for full resolution image.

Today’s cool image is cool for two reasons. First and foremost, the image, found in the archive of the high resolution camera of Mars Reconnaissance Orbiter (MRO), is titled “Circular Feature.” On the right is the full image, reduced to post here. I have searched it high and low, at low resolution as well as full resolution, and can find nothing, nothing at all, that invokes a circular feature to me.

This strange terrain is located very close to the southern icecap. If anything, the knobs and features that fill this image remind me of brain terrain, partly obscured by a layer of partly melted snow or frost. Nothing however seems circular in the slightest.

The second reason this image is cool is that it is very representative of its very large surrounding region. For what appears to be several hundred miles in all directions this is all that one can see, in a variety of MRO images, here, here, here, here, here, and here, to show only a few. Ever so often a craterlike feature pops out, like in the last example, but generally the surface continues in this undulating bland manner, endlessly. The only changing aspect is the dark streaks that cut across, likely dust devil tracks made over a long period of time.

Below the fold is a section of the full resolution image, at full resolution. It doesn’t really matter where I took the crop, as anywhere in the full image everything looks pretty much the same. The only slow change that I can perceive is that the surface seems to be descending to the north, with the lighter areas implying the existence of terraces.

Take a look, and try to figure out for yourself what is going on here.
» Read more

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India launches military satellite plus 28 smallsats

8:47 am

Capitalism in space: India today successfully used its PSLV rocket to launch one Indian military satellite plus 28 smallsats.

The rocket’s fourth stage demonstrated an additional capability.

Monday’s launch, the second of the year for India’s Polar Satellite Launch Vehicle (PSLV), was tasked with a series of maneuvers for the rocket’s upper stage to insert twenty-nine deployable payloads into their pre-planned orbits over the first two hours of its flight.

Following separation of the last payload, the upper stage will maneuver to a final orbit where it will operate as a research platform, hosting three attached payloads to demonstrate this capability for future missions. The launch also tests out a new configuration for the PSLV, a further intermediate between the lightest and heaviest versions of the rocket.

UPDATE: Yesterday China also launched a communications satellite designed to facilitate in-space communications, using its Long March 3B rocket.

The leaders in the 2019 launch race:

4 China
3 SpaceX
3 Europe (Arianespace)
2 Russia
2 India

The U.S. continues to lead China in the national rankings 6 to 4.

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Scientists propose widespread deep groundwater on Mars

9:40 am

In a new study, scientists are now suggesting that widespread deep groundwater exists on Mars, and is the cause of the recurring slope lineae seen on many Martian slopes.

Previous theories for the cause of lineae proposed both dry and wet processes, all related to either near surface or atmospheric phenomenon. This new hypothesis is different, as it proposes deep groundwater as the source.

“We propose an alternative hypothesis that they originate from a deep pressurized groundwater source which comes to the surface moving upward along ground cracks,” Heggy says. “The experience we gained from our research in desert hydrology was the cornerstone in reaching this conclusion. We have seen the same mechanisms in the North African Sahara and in the Arabian Peninsula, and it helped us explore the same mechanism on Mars,” said Abotalib Z. Abotalib, the paper’s first author.

The two scientists concluded that fractures within some of Mars’ craters, enabled water springs to rise up to the surface as a result of pressure deep below. These springs leaked onto the surface, generating the sharp and distinct linear features found on the walls of these craters. The scientists also provide an explanation on how these water features fluctuate with seasonality on Mars.

This conclusion is most intriguing, but it is far from certain. Scientists have found a lot of lineae. For all of them to come from deep groundwater rising under pressure through fractures seems unlikely.

Nonetheless, this research indicates the growing belief among Mars researchers that water exists everywhere on Mars, and is accessible.

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Mars helicopter completes first test flight

9:28 am

The small helicopter that will fly autonomously as part of the Mars 2020 rover mission has successfully completed its first test flights here on Earth.

“We only required a 2-inch (5-centimeter) hover to obtain all the data sets needed to confirm that our Mars helicopter flies autonomously as designed in a thin Mars-like atmosphere; there was no need to go higher. It was a heck of a first flight,” [said Teddy Tzanetos, test conductor for the Mars Helicopter at JPL.]

The Mars Helicopter’s first flight was followed up by a second in the vacuum chamber the following day. Logging a grand total of one minute of flight time at an altitude of 2 inches (5 centimeters), more than 1,500 individual pieces of carbon fiber, flight-grade aluminum, silicon, copper, foil and foam have proven that they can work together as a cohesive unit.

This helicopter drone is a technology experiment, more focused on testing helicopter flying on Mars that doing science. If it proves to work, it will open up a whole new unmanned option for exploring the Martian surface. Imagine a helicopter that takes short hops from point to point. It will be able to reach locations a rover never could, and do it faster.

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Beresheet to win $1 million if it succeeds in lunar landing

9:13 am

Capitalism in space: The X-Prize Foundation today announced that it will award the Israeli company SpaceIL a million dollar award should its privately-funded spacecraft Beresheet successfully soft land on the Moon on April 11.

The foundation also stated that it is considering offering other similar awards for similar private achievements. In that context, this article in Science today gives a nice summary of the private companies now working to buiild and launch private planetary probes.

Two companies, Moon Express and TeamIndus, appear ready to fly their lunar landers in 2020. Four others have announced plans, but their schedules and status are less firm. In all cases, these companies are establishing themselves as commercial alternatives to the expensive, government-built planetary probes of the past. Rather than build their own spacecraft, scientists in the future will hire these companies, and attach their instruments to their spacecrafts. And get things build faster and for less money.

Moreover, NASA itself has been encouraging this transition.

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Parker about to do its second close fly-by of Sun

8:48 am

The Parker Solar Probe is now approaching its second close fly-by of the Sun, set to occur on April 4.

During this solar encounter phase, which lasts until April 10, the spacecraft’s four suites of science instruments are fully operational and storing science data collected from within the Sun’s corona. As designed, Parker Solar Probe will be out of contact with Earth for several days during the solar encounter. This allows the spacecraft to prioritize keeping its heat shield, called the Thermal Protection System, oriented towards the Sun, rather than pointing its transmitter towards Earth. Science data from this second solar encounter phase will downlink to Earth over several weeks later in spring 2019.

This fly-by the spacecraft will match the record of 15 million miles set during the first orbit as the closest any human spacecraft has ever gotten to the Sun. Future orbits however will get closer.

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Rocket Lab launch a success

4:44 pm

Capitalism in space: Rocket Lab today successfully placed a DARPA technology satellite in orbit using its smallsat Electron rocket.

Expect there to be an increase in the pace of launches from this company in the coming months.

The leaders in the 2019 launch race remain the same however:

3 SpaceX
3 China
3 Europe (Arianespace)
2 Russia

The U.S. however now leads in the national rankings, 6 to 3, over China and Europe. I list Rocket Lab as an American company because that’s what the company calls itself, even though it launches from New Zealand and right now builds the bulk of its rockets there.

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Live feed of today’s Rocket Lab Electron launch

1:49 pm

The countdown to Rocket Lab’s first launch in 2019, to place a DARPA technology demo satellite in orbit, is proceeding without problems, with the four hour launch window beginning at 6:30 pm (Eastern) today. The launch itself is presently set for 7:27 pm (Eastern).

The link will include the company’s live stream of the launch, when it begins about fifteen minutes before launch.

Should this launch succeed, Rocket Lab has said it would begin more regular launches, aiming for monthly and even bi-monthly launches before the end of the year.

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Saturn’s rings desposit material on its tiny nearest moons

1:03 pm

Pan

A new analysis of data from Cassini has confirmed that the tiny moons orbiting close to Saturn’s rings are repeatedly coated by material from those rings.

The new research, from data gathered by six of Cassini’s instruments before its mission ended in 2017, is a clear confirmation that dust and ice from the rings accretes onto the moons embedded within and near the rings.

Scientists also found the moon surfaces to be highly porous, further confirming that they were formed in multiple stages as ring material settled onto denser cores that might be remnants of a larger object that broke apart. The porosity also helps explain their shape: Rather than being spherical, they are blobby and ravioli-like, with material stuck around their equators. “We found these moons are scooping up particles of ice and dust from the rings to form the little skirts around their equators,” Buratti said. “A denser body would be more ball-shaped because gravity would pull the material in.”

This result is not a surprise. It has been hypothesized since the first images of these weirdly shaped moons (as illustrated by the picture of Pan from March 2017 above) were first beamed back by Cassini. This new analysis just helps confirm it.

I will add that searching through Behind the Black for that image of Pan made me realize how much I miss Cassini. I used to post lots of its images, always spectacular and breath-taking. With it gone, the images from Saturn have stopped, and will not resume for decades to come.

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How fast do things change on Mars?

12:46 pm

Looking for dune changes on Mars

On Earth, it is assumed that in a period of a dozen years a sand dune would change significantly. Wind and rain and the yearly cycle of the seasons would work their will, reshaping and moving the dune steadily from one place to another.

On Mars, we would be reasonable to expect the same. Yet, this might be a mistake, as illustrated by the two images on the right, taken by cameras on Mars Reconnaissance Orbiter (MRO) a dozen years apart of the same large dune located in a crater far to the south in the planet’s southern highlands. Both images have been cropped and reduced in resolution to show here. For the full images, go here for 2007 and here for 2019.

The top image was taken October 31, 2007 by MRO’s context camera. The bottom image was taken on January 29, 2019 by MRO’s high resolution camera. Though the context camera does not have the resolution of the high resolution camera, the difference is of less significance in this context.

Have things changed? Putting aside lighting differences, it does appear that the white patches have changed slightly in a variety of places. There also might be changes in the small dunes on the left of the image, at the base of the large central dune.

The white patches are probably what interests the scientists who requested the second image. Could this be snow or frost, as is thought to exist in other places? There are studies [pdf] that expect ice to exist inside craters near the south pole. Identifying changes here would help answer this question.

Overall, however, not much is different. Though dunes definitely change on Mars, they do so much more slowly than on Earth. And in some cases what look like dunes are not really dunes at all, but a form of cemented sandstone, exhibiting even fewer changes over long time spans.

I do not know if these dunes are of sand or sandstone. What the two images reveal is that in either case, things do not change on Mars at the same pace as they do on Earth. Even after three Martian years, the thin Martian atmosphere simply doesn’t have the same energy as on Earth, even though it can move things easier in the weak gravity.

While the pole caps of Mars change a lot seasonally, the rest of the planet evolves very slowly. Mars is no longer an active planet like the Earth. It is, in many ways, a dead planet, once alive with activity but now silent and relatively quiet.

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Update on the upcoming second Falcon Heavy launch

8:58 am

Link here. The rocket’s three first stages will be Block 5 versions. A static fire dress rehearsal countdown is set for April 1, with the launch scheduled for April 7.

Though the article does not say so, it hints at a number of serious engineering issues discovered during the first Falcon Heavy launch, suggesting to me once again that the success of that launch was somewhat fortuitous. SpaceX has spent the last year correcting those issues in preparation for this launch. Based on the company’s track record, the odds are very high the April 7 launch will be successful.

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Fresh crater in Martian northern lowlands

1:44 pm

Fresh impact crater in northern lowlands
Click for full image.

Today’s cool image could be a sequel to yesterday’s. The image on the right, cropped to post here, was one of the many images released from Mars Reconnaissance Orbiter’s (MRO) high resolution camera in March. The release, uncaptioned, calls this a “fresh impact crater.”

In many ways it resembles the craters I posted yesterday, with a splashed look and a crater floor with features that favor the north. Why that divot exists in the northern half of the floor is to me a mystery. The crater floor looks like a sinkhole to me, with material slowly leaking downward at that divot to cause this surface depression. Yet the rim screams impact. And yet, why the double rim? Was this caused by ripples in wet mud when the bolide hit?

Location of fresh impact crater

The crater itself is all by itself deep in those northern plains. You can see its location as the tiny white rectangle slightly to the left of the center in the overview image to the right. The giant Martian volcanoes can be seen at the image’s right edge, almost a quarter of a planet away. This is at a very low elevation on Mars, almost as deep as Hellas Basin.

For some fun context, this location is very close to where Viking 2 landed in 1976. The Mars 2020 rover meanwhile will land at this overview image’s left edge, on the western shore of the oval cut into southern highlands at about the same latitude as Olympus Mons, the largest volcano on the right. And InSight and Curiosity sit almost due south, with Curiosity in the yellow in the transition from green to orange, and InSight to the north in the green.

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India claims it has successfully destroyed a satellite using an anti-sat missile

8:56 am

The new colonial movement: In a speech to his nation today, India’s Prime Minister Narendra Modi announced that they have successfully completed their first anti-sat test, using a missile to destroy a satellite in low Earth orbit.

The Indian ASAT test is believed to have destroyed either the Microsat-R or the Microsat-TD satellite, likelier the former according to some sources. They were both built by the Defence Research and Development Organisation (DRDO). ISRO launched the Microsat-R on January 24 this year and the Microsat-TD a year before that.

Prime Minister Modi declared the test, codenamed Mission Shakti, a success and claimed that an ASAT missile had destroyed the satellite in its low-Earth orbit.

The missile in question is described as a kinetic kill vehicle, which means it does not carry any explosives or other devices. Instead, its ‘kill’ capability arises simply from the fact that it smashes into the target satellite and shatters it using its kinetic energy.

At this altitude, about 300 km, experts said that debris from the collision would fall back to Earth, burning up in the atmosphere in a matter of weeks instead of posing a threat to other satellites. As a result, Mission Shakti is called a controlled ASAT test.

What this anti-sat test really demonstrates is India’s ability to to hit a very tiny target that is moving more than 17,000 miles per hour with a missile shot from Earth, which proves they can hit any target on Earth, with great accuracy. And it thus a blunt message to both Pakistan and China. Don’t attack us, because if you do, we have the capability to do you great harm.

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OneSpace orbital launch fails

8:31 am

Capitalism in space? The first orbital launch attempt by China’s smallsat company OneSpace failed today.

No information about the cause of the failure or what happened has been released as yet.

I’m going to say this again: While OneSpace is financed through private capital, like a private company, it is also supervised closely by the Chinese government. It is hardly a private company as we in the West would define it.

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Strange craters in the Martian northern lowlands

12:58 pm

Strange crater in the northern lowlands
Click for full image.

Cool image time! The image on the right, cropped and rotated to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) and released in the monthly image dump provided by the science team. The release had no caption. It merely described this as a “Layered mound in crater.”

That is certainly what is is. However, layering suggests a regionwide process. The crater to the immediate northeast (the rim of which can be seen in the upper corner of this image), does not have the same kind of layering. (Be sure to click on the image to see that other crater.) Its crater floor is instead a blob of chaotic knobs, with the only layering scattered in spots along its north interior rim.

That the layering of both craters favors the north suggests a relationship, but what that is is beyond me. Prevailing winds? Maybe, but I don’t have the knowledge to explain how that process would work.

It is not even certain that these two craters were formed by impact. They are located in the northern lowlands where an intermittent ocean is believed to have once existed, and thus might be remnants of that ocean’s floor. That they both have a muddy appearance reinforces this hypothesis, but once again, I would not bet much money on this theory. The features here could also be expressing the effect of an impact on a muddy seafloor.

In either case the craters imply that the ocean that might have once been here existed a long enough time ago for these craters to form (either by impact or some other process) and then evolve. This has been a relatively dry place for a very long time.

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OneSpace to attempt first orbital launch this week

9:20 am

OneSpace, one of a bunch of companies in China attempting to launch smallsats, is expected to attempt its first orbital launch this week.

The article gives a nice overview of the present competition in China between several of these smallsat private companies, dubbed OneSpace, LandSpace, ISpace, and LinkSpace. All are funded through private investment capital, so all claim to be a private companies. However, nothing done in space in China is done without the approval and direction of the government. They might be designed as private companies, but they are also designed expressly to serve the needs of the Chinese government. That their company names are all so similar only strengthens this conclusion.

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Russia cuts Proton price to match SpaceX

9:00 am

Capitalism in space: Dmitry Rogozin, the head of Roscosmos, yesterday said that Russia will cut costs so that the price they charge for a Proton launch will match SpaceX.

Russia is struggling to regain its Proton customer base after the launch failures of the past few years. I don’t think matching SpaceX’s prices will do it. Right now satellite companies view them as offering a less reliable product, and until they can prove this impression false they need to offer their rocket for even less that SpaceX.

This is in fact what SpaceX did at the beginning. Its rockets were untested and thus risky to use. To compensate they offered a cheaper way to space. Now Russia has to do the same, or the business will continue to go to others. I wonder if Rogozin understands this.

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Update of Starhopper testing in Texas

8:43 am

Link here. Nothing spectacular yet, just steady and relatively quick developments.

I did find one aspect of these events a little disturbing:

In quick order, residents of Boca Chica Village were notified via mail of imminent tests and road closures that would occur as early as this week, the week of 18 March.

The notice to residents revealed that a security checkpoint would be set up on the road leading to Boca Chica Village and that residents would have to show proof of residence in order to gain access to their homes; any passengers in those vehicles would also have to show proof of residence.

This indicates that no guests will be allowed past the security checkpoint during the coming flight test operations of Starhopper.

A hard checkpoint beyond which no access to Boca Chica Beach will be granted will be further down the road.

By what right do the authorities have the power to prevent American citizens from bringing guests to their homes? None. If I lived in this development I would fight this, hard.

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The layering at the Martian poles

2:56 pm

Layering in the east side of Burroughs Crater
Click for full image.

Layering in the west side of Burroughs Crater
Click for full image.

In the past month the science teams of both Mars Reconnaissance Orbiter (MRO) and Trace Gas Orbiter (TGO) have released images showing the strange layering found in Burroughs Crater, located near the Martian south pole.

The top image above is the MRO image, rotated and cropped to post here. To the right is a cropped and reduced section of the TGO image.

Though both images look at the inside rim of the crater, they cover sections at opposite ends of the crater. The MRO image of the crater’s east interior rim, with the lowest areas to the right, while the TGO image shows the crater’s northwest interior rim, with the lowest areas on the bottom. As noted at the TGO image site:
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Rogozin: Investigation into Soyuz sabotage to continue on ISS

9:22 am

In his remarks to journalists today Roscosmos head Dmitry Rogozin also said that the Russian investigation into the hole that was drilled in a Soyuz capsule last year is not over, and that they plan to do further “experiments” on ISS.

“The samples collected on the ISS are insufficient for final conclusions. Apparently, additional experiments in orbit will be required,” Rogozin said.

What those “additional experiments in orbit” will be was not explained. I suspect he is referring to the security cameras the Russians are installing on their part of ISS, with the hope of catching the saboteur in the act.

What I think is going on here is that they have not been able to uncover who did this on the ground, and are now trying to imply it might have been sabotage by a U.S. astronaut. Rogozin can’t say this outright, because he wants to keep good relations with the U.S. in the partnership on ISS. He can hint at it, however, and let his own press run with it.

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