Tag: engineering

China launches eleven satellites on Long March 2D rocket

12:08 am

China today launched eleven satellites using its Long March 2D rocket, with the primary payload a solar observation telescope, designed to observe the Sun in the hydrogen-alpha wavebands.

The hydrogen-alpha wavelength is deep red and is centered at 656.28 nanometers – for comparison, visible light runs from 400 to 700 nanometers. Observing the Sun at the hydrogen-alpha wavelength can reveal structures, evolution, and dynamic processes associated with solar flares and filaments. Hydrogen-alpha observations can also reveal solar wave phenomena, which are precursors to coronal mass ejections, and the dynamics of activity in the Sun’s lower atmosphere.

The rocket’s first stage was also equipped with grid fins similar to those used on SpaceX’s Falcon 9. Their goal at this time is simply to more precisely guide that expendable first stage back to its drop zone in the interior of China, thereby preventing it from crashing into habitable areas.

The leaders in the 2021 launch race:

35 China
23 SpaceX
17 Russia
4 Northrop Grumman

The U.S. and China are now tied at 35 successful launches in the national rankings. With three more launches expected in the next three days, one by China and two by the U.S., expect these numbers to rise quickly.

One comment

Hubble data detects persistent water vapor on one of Europa’s hemispheres

1:30 pm

Using data from the Hubble Space Telescope spanning sixteen Earth years, scientists have detected the presence of water vapor on Europa, but strangely spread only across one of the moon’s hemispheres.

Previous observations of water vapor on Europa have been associated with plumes erupting through the ice, as photographed by Hubble in 2013. They are analogous to geysers on Earth, but extend more than 60 miles high. They produce transient blobs of water vapor in the moon’s atmosphere, which is only one-billionth the surface pressure of Earth’s atmosphere.

The new results, however, show similar amounts of water vapor spread over a larger area of Europa in Hubble observations spanning from 1999 to 2015. This suggests a long-term presence of a water vapor atmosphere only in Europa’s trailing hemisphere – that portion of the moon that is always opposite its direction of motion along its orbit. The cause of this asymmetry between the leading and trailing hemisphere is not fully understood.

First, it must be emphasized that the amounts of atmospheric water being discussed are tiny, so tiny that on Earth we might consider this a vacuum.

Second, that the water vapor is only seen on the trailing hemisphere suggests there is some sort of orbital influence involved, though what that influence is remains unknown.

Hopefully when Europa Clipper finally arrives in orbit around Jupiter in 2030, with a path that will fly past Europa fifty times, we will some clarity on these questions.

2 comments

A gecko on Mars

12:24 pm

Gecko on Mars
Click for full image.

Today’s cool image is also today’s picture of the day from the science team of the high resolution camera on Mars Reconnaissance Orbiter (MRO. That picture, rotated, cropped, and reduced to post here, can be seen to the right. As the caption authors Sharon Wilson and Sarah Sutton write:

The smooth volcanic surfaces in the Gordii Fossae region are sometimes interrupted by long, narrow troughs, or fissures. These fissures form when underground faults, possibly involving magma movement, reach the near-surface, allowing material to collapse into pits or an elongated trough. This fissure appears to have erupted material that flowed onto the surface.

If you use your imagination, this trough resembles a gecko with its long tail and web-shaped feet!

This impression is even more evident in the wider image taken by MRO’s context camera below.
» Read more

3 comments

Shatner vs today’s America

9:17 am

Shatner vs everyone else
Shatner, on the left, turns away from Bezos and the spray of champagne.

Capitalism in space: The profound, emotional, and thoughtful reaction of William Shatner to his short suborbital flight yesterday on Blue Origin’s New Shepard space capsule contrasted starkly with the crass, rude, and shallow response of his co-passengers and Jeff Bezos.

You can watch Shatner’s comments right after landing at the video at the link. Watch how he tries to express his thoughts to Bezos immediately, and is almost ignored as Bezos and the others instead want to spritz champagne at each other. Shatner turns away, almost in disgust. The screen capture to the right shows him turning away, not because he doesn’t want to be hit by champagne but because he doesn’t want that shallowness to steal from him the emotions he now feels.

Eventually Bezos realizes Shatner is going to say his peace, and that he better pay attention. Shatner, almost in tears, struggles to note how shocked he was at the relative thinness of the atmosphere. To him, the rocket so quickly zipped out of a blue sky into blackness. As he said,

“This air, which is keeping us alive, is thinner than your skin. It’s a sliver. It’s immeasurably small when you think in terms of the universe.

…”What you have given me is the most profound experience I can imagine. I’m so filled with emotion about what just happened … it’s extraordinary. I hope I never recover, that I can maintain what I feel now. I don’t want to lose it. It’s so much larger than me and life.”

Shatner is an actor. For him, the emotion is the most important thing, as that is what he has specialized in expressing on screen to others for his entire life. At this moment, however, he was not expressing the emotions of a imaginary character he was creating on screen, but his own personal emotions. He managed to do it, in the best way possible. God speed William Shatner. We shall miss you when you are gone.

That Bezos was so unprepared for this moment from Shatner was very unfortunate. It made him look very shallow and foolish, which is a shame because, as Shatner so correctly noted, Bezos was the one who made that moment possible.

Shatner, at ninety years of age, is of a different more civilized generation that believed strongly in applying thought to one’s emotions, rather than letting those emotions rule. The contrast between him and all the younger people in this clip gives us a clear snapshot of an America now gone, replaced by the thoughtless emotional America of today.

32 comments

Russia launches another 36 OneWeb satellites

8:37 am

A Russian Soyuz-2 rocket today successfully launched 36 more OneWeb satellites, raising the total of the satellite constellation in orbit to 358.

The launch was from Russia’s new spaceport Vostochny. As with all launches from Russia, the expendable first stage core and strap-ons landed inside Russia within designated drop zones. And as usual, no word from Russia on whether they landed on anyone’s head.

The leaders in the 2021 launch race:

34 China
23 SpaceX
17 Russia
4 Northrop Grumman

The U.S. still leads China in the national rankings, 35 to 34. With launches scheduled by both countries (two by the U.S. and one by China) over the next three days, these numbers will continue upward.

3 comments

Webb telescope finally arrives at launch site in French Guiana

2:54 pm

Webb deployment

After almost twenty years of construction (a decade behind schedule) and a cost of $10 billion, ($9.5 billion over budget), the James Webb Space Telescope today arrived at the processing facility at Arianespace’s French Guiana spaceport, where it will be prepared for a December 18, 2021 launch on an Ariane 5 rocket.

Once launched the telescope, which is not a replacement for Hubble because it observes in the infrared (not optical) and is optimized for deep space cosmology, will take two weeks to reach its orbital position about a million miles from Earth, as shown in the graphic.

Let us all cross our fingers and toes that it all works as designed, for if it doesn’t this will be the biggest failure ever in the history of NASA.

10 comments

Astronaut blood samples suggest long-term exposure to weightlessness causes brain damage

2:10 pm

New research comparing blood samples taken from five Russian astronauts before and after long term missions to ISS suggests that weightlessness can cause brain damage.

Published in JAMA Neurology, the new research looked at five male Russian cosmonauts. Each spent an average of 169 days in space. Blood samples were taken from each subject before leaving Earth, and then at three points after returning.

Five different blood-based biomarkers were measured, each known to correlate with some kind of brain damage. Three biomarkers in particular were found to be significantly elevated after the cosmonauts returned to Earth – neurofilament light (NfL), glial fibrillary acidic protein (GFAP), and a specific type of amyloid beta protein.

The researchers hypothesize the increases in NfL and GFAP levels may indicate a type of neurodegeneration called axonal disintegration. Elevated NfL levels are currently being investigated as a way of detecting the earliest stages of brain damage associated with Alzheimer’s disease.

It must be emphasized that the research did not find brain damage, only data within the blood samples that is often associated with brain damage. More research is required to determine if these biomarkers indicate the same thing in space as they do on Earth.

9 comments

Australia to build unmanned lunar rover for NASA

7:06 am

NASA and Australia have signed a deal whereby Australia will provide an unmanned lunar rover on which NASA will put its science instruments, with the package taken to the Moon by a commercial lander.

As part of the agreement, a consortium of Australian businesses and research organizations will develop a small rover that can operate on the lunar surface. The rover would have the ability to pick up and transfer lunar regolith (broken rock and dust) to a NASA-operated in-situ resource utilization (ISRU) system on a commercial lunar lander. Such a rover could fly to the Moon as early as 2026.

While this agreement helps widen the competition in the commercial unmanned planetary aerospace industry, it does so by helping the industry of another country. This policy fits the general philosophy of the Democratic Party and the Biden administration, which generally focuses on aiding other countries before the U.S.

Posted on the road to Phoenix.

14 comments

Watching the New Shepard suborbital flight with William Shatner

10:44 pm

I have embedded the live stream of the Blue Origin suborbital flight today of its New Shepard spacecraft, carrying four passengers including William Shatner.

The launch is presently scheduled for 7 am (Pacific). The live stream will start about 5:30 am (Pacific).

As I have noted previously, the announcers for Blue Origin tend to blather quite a bit, hyping the situation to a point of nausea. Hopefully during the flight they will shut up and allow the voices of the passengers to take center stage.

I meanwhile will be on the road during the flight. I will try to post updates as well as my normal news stories, but both might have to wait until I return home in the early afternoon. Regardless, the live stream is below for you to enjoy.

25 comments

Dusty chaos in Martian canyons

1:37 pm

Outcrops in dusty chaos on Mars
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on May 30, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows the dusty dry floor of the chaos region of rough terrain in a side canyon of Valles Marineris, near its outlet. The color strip and the bright outcrops suggest that this terrain contains interesting minerals and resources. To determine exactly what those materials are however requires more information not available in this photo.

This ancient chaos terrain is the leftover eroded sea floor of a intermittent inland sea, leftover water from the catastrophic floods that are theorized to have flowed out of Valles Marineris and carved its gigantic canyons.

The overview map below shows this hypothesized sea.
» Read more

One comment

Shetland spaceport gets 10-year launch contract from new British rocket company

8:50 am

Capitalism in space: The new spaceport in Shetland, Scotland, has signed a 10-year launch contract from the new British rocket company, Skyrora.

Rocket company Skyrora has agreed a multi-launch deal with the SaxaVord spaceport on Unst, the most northerly of the Shetland Islands, as it moves closer to launching its XL rocket in 2022. This is the first agreement Skyrora has made with a Scottish Spaceport. If successful, this could be the first rocket to go to space from the UK.

The deal with SaxaVord [the new name for the Shetland spaceport] will run for the next decade, giving Skyrora the ability to build towards its target of 16 launches a year by 2030.

The XL rocket is designed to launch smallsats, and will compete with companies like Astra and Rocket Lab. If Skyrora is success, it will not only be the first rocket to launch from the UK, it will be the first British-built rocket to launch since October 1971.

Leave a comment

Starship/Superheavy update

8:43 am

Link here. SpaceX is moving on several fronts in preparation for the next Starship/Superheavy tests:

  • Engines have been installed in Starship prototype #20 which will be tested this week
  • A new Raptor engine factory is under construction
  • Launch tower construction continued
  • Future prototypes continue to be built

Lots of details and videos at the link. Based on road closures, the prototype #20 static fire test will occur today, and will be the first such test on a Starship using orbital Raptor engines.

10 comments

Astra schedules next launch attempt

8:36 am

Capitalism in space: The new smallsat rocket company Astra has completed its investigation of its launch failure on August 28th and scheduled its next launch attempt for no earlier than October 27th.

During liftoff, kerosene fuel and liquid oxygen both leaked from the propellant supply system adjacent to the rocket. This system is designed to quickly disconnect and seal when the rocket launches. When LV0006 lifted off, these leaked propellants mixed and became trapped beneath the interface between the rocket and the ground equipment.

These mixed propellants were subsequently ignited by the exhaust of the first stage engines, which caused an over-pressurization that severed the electrical connection which controls the fuel pump. This caused the shutdown of one Delphin on the first stage less than one second after liftoff.

The company has revised its system to prevent further leaks, and shifted the fuel lines so that even if there is a leak, the propellants can no longer mix.

Leave a comment

Michael Knowles – Celebrating Columbus

6:01 pm

An evening pause: On this day when all should be celebrating Christopher Columbus and his willingness “sail beyond the sunset,” to use a phrase from Tennyson, this short video give us an accurate picture of the man, his times, and his achievements. It also puts the lie to the bigoted, hateful, leftist slanders that have been used in recent years to poison his legacy.

Note that I got this video from Rumble. I ask all who wish to suggest evening pauses to consider searching on Rumble and Vimeo, so that we are less dependent on YouTube. The Google company needs to feel some competitive pressure.

14 comments

Ancient fossil river in the very dry equatorial regions of Mars

1:27 pm

Inverted Channel on Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on August 29, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label an “inverted channel in Arabia Terra,” a small example of the more than 10,000 miles of fossilized rivers in this region on Mars that scientists have identified using MRO.

They are made of sand and gravel deposited by a river and when the river becomes dry, the channels are left upstanding as the surrounding material erodes. On Earth, inverted channels often occur in dry, desert environments like Oman, Egypt, or Utah, where erosion rates are low – in most other environments, the channels are worn away before they can become inverted. “The networks of inverted channels in Arabia Terra are about 30m high and up to 1–2km wide, so we think they are probably the remains of giant rivers that flowed billions of years ago. [emphasis mine]

Since this fossilized river is located at 11 degrees north latitude, smack in the middle of the dry equatorial regions of Mars, it has certainly been a dry desert for a very long time. You can see how barren the terrain appears by looking at the wider view afforded by MRO’s context camera below.
» Read more

4 comments

Weather delays New Shepard’s Shatner launch one day

8:56 am

Capitalism in space: Because of high winds predicted for tomorrow, Blue Origin has delayed its next suborbital flight of New Shepard, carrying four private citizens including William Shatner, for one day to October 13th.

The launch is scheduled for 9:30 am (Eastern), with live coverage beginning at 8 am (Eastern) on Blue Origin’s website. Be warned, however. If you watch with the sound on you will likely have to listen to a lot of hype and blather from the company’s announcers, who routinely can’t keep their mouths shut and have to tell us over and over and over again how “spectacular” and “breath-taking” and “historic” this all is.

If they do pause in their hyperbole, however, listening to Shatner during the flight will likely be worth it. The man has wit and knows how to use it.

5 comments

OneWeb to use India’s rockets for satellite launches

8:44 am

Capitalism in space: OneWeb today announced that it has signed a deal with India to use its rockets for satellite launches.

Low Earth orbit (LEO) satellite communications company OneWeb has announced its plans to collaborate with the commercial arm of the Indian Space Research Organisation (ISRO), NewSpace India Limited (NSIL), to utilise indigenously built Polar Satellite Launch Vehicle (PSLV) and the heavier Geosynchronous Satellite Launch Vehicle (GSLV-MkIII) as likely platforms to launch OneWeb’s satellites in India from next year.

This is not good news for either Russia or Arianespace. Up to now these entities pretty much were launching all of OneWeb’s satellites. Now some of that business is being shifted to India.

The deal was revealed at a press conference that announced the formation of an Indian commercial trade organization, the Indian Space Association (ISpA), that partnering with the government will use the government’s space assets to develop private commercial space resources.

The Indian Space Association (ISpA) will be headed by Jayant Patil, senior executive vice president – Defence, L&T-NxT as its chairman, and Bharti Airtel’s chief regulatory officer Rahul Vatts as its vice-chairman, while Lt Gen. A.K. Bhatt (Retd.) has been appointed as the director-general of the association.

Among its early members include Bharti Airtel, Larsen & Toubro, Nelco (Tata Group), OneWeb, Mapmyindia, Walchandnagar Industries and Ananth Technology Limited.

Bharti is the company that invested $500 million to bring OneWeb out of bankruptcy, partnering with the United Kingdom.

The key question is whether these private companies will invest in developing private rockets, or will simply continue to launch using ISRO’s rockets. Based on this announcement, it appears the latter, but since the whole goal here of the Modi government of India appears to be to encourage a private sector, this could soon change.

7 comments

As expected, Pluto’s atmosphere is freezing as its orbit takes it from the Sun

10:48 am

Data from ground-based telescopes has now confirmed that Pluto’s nitrogen atmosphere has begun it annual winter freeze out as the planet’s somewhat elliptical 248-year-long orbit takes it away from the Sun.

For about 25 years, Pluto has been moving farther and farther away from the sun, so its surface temperature has been going down. And with these recent observations, the researchers found evidence showing that Pluto’s atmosphere is actually refreezing back onto its surface as the dwarf planet gets colder and colder. Pluto is so far from the sun that, as time goes on, it will get distinctly farther away (and colder) before getting closer to the sun in other regions of its immense orbit.

The astronomers were able to detect this refreezing by observing the planet as it eclipsed a star in 2018.

7 comments

New Horizons discovers two binary asteroids in Kuiper Belt

10:32 am

Overview map
Click for full map.

As New Horizons traveled from Pluto to the asteroid Arrokoth in 2018, scientists used it to take images of the relatively nearby asteroids that it was passing, and found that two of those asteroids appeared elongated.

[T]he team fit the shapes with a two-body model: two asteroids in a tight orbit. Even though the individual rocks weren’t resolved, the modeling showed that two bodies were better able to explain the elongation, as well as the brightness seen. The model for 2011 JY31 had two 50-km-wide objects nearly 200 km apart, while for 2014 OS393, the model had slightly smaller bodies (30 km across) that orbited each other 150 km apart.

The map, cropped and further annotated by me, shows New Horizons’ path during this time period, with the two binary asteroids indicated in blue.

This data, combined with the double lobe shape of Arrokoth (formerly named Ultima Thule), strongly suggests that it was not unusual for these primitives asteroids in the early solar system to coalesce from comparably sized partners.

One comment

Update on Boeing’s investigation into Starliner valve issue

10:10 am

NASA yesterday issued an update on Boeing’s investigation into Starliner valve issue, noting that progress is being made.

Boeing has demonstrated success in valve functionality using localized heating and electrical charging techniques. Troubleshooting on the pad, at the launch complex, and inside the Starliner production factory at Kennedy Space Center has resulted in movement of all but one of the original stuck valves. That valve has not been moved intentionally to preserve forensics for direct root cause analysis.

Most items on the fault tree have been dispositioned by the team including causes related to avionics, flight software and wiring. Boeing has identified a most probable cause related to oxidizer and moisture interactions, and although some verification work remains underway, our confidence is high enough that we are commencing corrective and preventive actions. Additional spacecraft and component testing will be conducted in the coming weeks to further explore contributing factors and necessary system remediation before flight.

…Boeing has identified several paths forward depending on the outcome of the testing to ultimately resolve the issue and prevent it from happening on future flights. These options could range from minor refurbishment of the current service module components to using another service module already in production. [emphasis mine]

The announcement also confirmed that the next launch attempt of the unmanned demo mission is now being targeted for “the first half of 2022, pending hardware readiness, the rocket manifest, and space station availability.”

The highlighted words raise a very serious question. How is it possible for “oxidizer and moisture interactions” to cause this problem now on Starliner, when the environmental conditions at Cape Canaveral for spacecraft have been understood for better than sixty years? Though this problem might have uncovered a previously undetected fundamental engineering issue related to valves, I am very skeptical. It seems more likely that some quality control issue occurred during this capsule’s assembly. That they are considering using a different Starliner capsule for the demo flight strongly confirms this, suggesting again that the valve issue is not systemic to all valves but is specifically linked to the assembly of this capsule.

If this speculation is correct, it suggests there are some some very disturbing quality control problems in Boeing’s Starliner design and assembly processes. First they missed about sixty software issues that forced the premature landing of the capsule in the first demo flight, issues that should have been fixed during design and construction. Now it appears they have discovered assembly problems with the capsule’s valves, and only did so mere hours before launch.

Boeing has got to get these issues fixed, or it is going to have a serious public relations problem garnering private customers outside NASA once Starliner begins commercial flights.

14 comments

Data from Perseverance confirms Jezero Crater once held a lake

6:52 am

figure 5 from paper showing ancient lake in Jezero Crater

According to a newly published paper, the data obtained by the rover Perseverance has confirmed and refined what orbital data has suggested, that Jezero Crater once held a lake. From the abstract:

We analyze images taken by the rover in the three months after landing. The fan has outcrop faces that were invisible from orbit, which record the hydrological evolution of Jezero crater. We interpret the presence of inclined strata in these outcrops as evidence of deltas that advanced into a lake. In contrast, the uppermost fan strata are composed of boulder conglomerates, which imply deposition by episodic high-energy floods. This sedimentary succession indicates a transition, from a sustained hydrologic activity in a persistent lake environment, to highly energetic short-duration fluvial flows.

In other words, the crater first held a lake, which as it slowly dried out was periodically renewed by flash floods. The distinct delta of material that made Jezero Crater the prime landing site was apparently formed during the period when the lake existed. The conditions that caused the subsequent flash floods is as yet not been determined, though it likely is related to the red planet’s long term evolution.

The image above, figure 5 from the paper, shows the inferred lake in that early history. The red cross marks Perseverance’s landing site.

This data reinforces the fundamental scientific mystery of Mars. It shows evidence that liquid water once flowed on the surface of Mars, even though other long term data of the planet’s history says the Martian atmosphere has been too thin and too cold to allow that to happen. There is evidence that the atmosphere might have once been thicker, but no computer model or theory has been able to produce a time when it was warm enough.

3 comments

Astronauts name next new Dragon capsule to fly “Endurance”

6:33 am

The astronauts who will fly on SpaceX’s new Dragon capsule at the end of this month have named it “Endurance”, for a variety of reasons.

“First off,” said [mission commander Raja Chari], “it is a tribute to the tenacity of the human spirit as we push humans and machines farther than we ever have, going both to stay and extended stays in low Earth orbit, opening it up to private companies and private astronauts and knowing we will continue our exploration to go into even further and continue.”

“Also, it is a nod to the development teams, production teams [and] training teams that got us here, who have endured through a pandemic,” he said.

…Lastly, there was a historical connection — one that spoke to the mission they are about to embark on and the skills it will take for it be successful.”I go straight to the Shackleton voyage,” said Marshburn, referring to Ernest Shackleton’s 1914 expedition to cross Antarctica. Shackleton’s ship, the Endurance, was trapped in ice and he and his crew endured months of hardship before being rescued.

SpaceX’s fleet of manned capsules now includes Endeavour, Resilience, and Endurance. A fourth capsule is scheduled to fly in April ’22, but no name as yet has been announced.

13 comments

Chang’e-5 lunar samples youngest ever found

6:28 am

The uncertainty of science: The lunar samples returned to Earth by China’s Chang’e-5 lander have been found to be the youngest ever found, about two billion years old and a billion years younger than any other previous sample, with a composition that confirms the material in this area was also the youngest volcanism so far found on the Moon.

Collecting young lunar rocks was one of the main objectives for the Chang’e-5 mission, which sent a lander to the Moon in December 2020. The craft grabbed 1.7 kilogram (4 pounds) of lunar regolith from the vast volcanic plain of Oceanus Procellarum and flew back to Earth within the month. Observations from lunar orbit had identified this mare to be younger than other areas by its paucity of craters, which suggested that the lava there had flowed more recently. By dating the samples returned to Earth, the scientists confirm that volcanism occurred later in Oceanus Procellarum than other areas of the Moon.

Many news stories are claiming that the young age of these samples is a surprise, but this isn’t true. It was expected, as the quote above indicates.

However, the composition of the rocks did not match what was expected. Though created by volcanism, it appears the material did not have kind of composition seen in other lunar volcanic rocks. This is now a new puzzle for scientists.

One comment

SpaceX to double its fleet of reusable manned Dragon capsules

11:07 am

Capitalism in space: Based on the launch plans now announced, SpaceX will double its fleet of reusable manned Dragon capsules from two to four.

The upcoming October 30th launch of a new crew to ISS will use a new as yet unnamed Dragon capsule. In addition, the April ’22 flight will use another new capsule.

The four previous manned Dragon flights used Resilience (twice) and Endeavour (twice).

At the moment SpaceX appears to be reserving Resilience for non-ISS tourist flights. It was used in September in this way for the Inspiration4 private mission, and I expect it will be used again for the December Space Adventures tourist flight. For these non-ISS flights SpaceX removed Resilience’s docking port, replacing it with a large window.

The result will be that a private American company will own its own fleet of manned spaceships, three of which can dock with ISS, and one of which aimed at just orbiting the Earth. That’s a private company, not a nation. And that private company made it happen in just a little over a decade.

Who knows what wonders capitalism and freedom could accomplish, if we simply had the courage to let it?

14 comments

Advocacy group in India calls for criminal prosecution of Musk and Starlink

10:56 am

A non-profit advocacy group in India, dubbed Telecom Watchdog, has demanded that the Indian government prosecute Elon Musk and Starlink because it asks for and gets $100 deposits from customers without guaranteeing a specific delivery date for its Starlink internet service.

The organisation further asked the telecom regulator to take effective steps to ensure refund with interest, and reprimand the telecom department (DoT) officials of “inaction” on the prevailing issue. [It also] said that the firm was cheating consumers by accepting pre-orders with a deposit of Rs 7,500 ($100) for yet-to-be-launched service.

It is unclear who funds Telecom Watchdog. I would not be surprised if it is backed by those in India who have also have vested interest in SpaceX’s chief competitor, OneWeb. The Indian company, Bharti Enterprises Ltd, has invested $500 million to OneWeb, which plans to initiate service to India next year. Starlink poses a serious financial threat to that roll-out.

7 comments

Report: Reduce contamination restrictions for some future Mars missions

10:35 am

A new policy paper from the National Academies has proposed reducing the planetary protection rules for some future Mars missions, concluding that Earth life cannot survive on Mars for long, and as long as a lander or rover does not land close to cave entrances or on extensive ice, the need to decontaminate is significantly reduced. From the press release:

In this report, the Committee focused on regions on Mars that might not be negatively impacted if visited by spacecraft that are not stringently sterilized. For missions that do not access the subsurface, such regions could include a significant portion of the surface of Mars, because the UV environment is so biocidal that terrestrial organisms are, in most cases, not likely to survive more than one to two sols, or Martian days. For missions that access the subsurface (down to 1 meter), regions on Mars expected to have patchy or no water ice below the surface might also be visited by spacecraft more relaxed bioburden requirements, because such patchy ice is likely not conducive to the proliferation of terrestrial microorganisms.

The report finds that it is imperative that any mission sent to Mars with reduced bioburden requirements remain some conservative distance from any subsurface access points, such as cave openings. Furthermore, though less stringent than current requirements, these missions with relaxed bioburden requirements would still need some level of cleanliness, which could be achieved for instance using standard aerospace cleanliness practices.

The report essentially concluded that missions to Mars’ dry equatorial regions as well as its glacial mid-latitudes pose no risk to contaminating the red planet with Earth life.

While the press release pushes the idea that this is a reduction in the planetary protection rules, it could be seen in a much worse light. Based on the proposed rules, missions to the Martian poles or higher latitudes, where ice is extensive and not “patchy,” might be entirely forbidden. This will significantly limit Martian exploration by the United States. Meanwhile, China and Russia and others will be faced with no such restrictions.

Note too that this report likely forbids SpaceX from landing its Starship in the company’s candidate landing sites, all of which are in the northern lowland plains ranging from 35 to 40 degrees north latitude. This region is thought to have extensive ice sheets very close to the surface. To land there, the rules proposed will either require extremely strict and very costly decontamination procedures, many of which do not even exist as yet, or will forbid landing there at all.

8 comments

NASA shifts Starliner crew to Dragon to get them in space

9:54 am

NASA announced yesterday that it is is changing the launch assignments of two astronauts from Boeing’s long delayed Starliner capsule to SpaceX’s Dragon capsule, thus allowing them to get into space sooner.

Astronauts Nicole Mann and Josh Cassada were supposed to be among the first human passengers on Starliner during its first crewed flights in the coming years. Now, they’ll fly together on SpaceX’s fifth crewed mission to the International Space Station, which is slated to take place in the fall of 2022.

Both had been assigned to Starliner in 2018, but the delays at Boeing have left them stranded on the ground while others are flying. Worse, it is now unclear when Starliner will launch, as Boeing has not yet resolved the serious valve issue that scrubbed the launch of Starliner’s second unmanned demo mission in August.

One comment

Honda developing reusable rocket

9:45 am

Capitalism in space: As part of a larger plan to diversify its product line, Japanese car manufacturer Honda announced on September 30th that it is developing a reusable rocket comparable to Rocket Lab’s Electron.

Honda’s press release can be found here. In it the company also proposes to develop technologies for use by colonies on the lunar surface.

All of these proposals so far appear to be nothing more than PowerPoint presentations, but according to the first link above, the company says it will spend about $9 billion per year for the next five years on all these projects, which also include developing a robot and an electric plane that takes off and lands vertically. (The dollar amount seems much too high, but it is based on a conversion from the announced $5 trillion yen total Honda says it is going to spend in next five years for this research and development.)

According to the announcement, the rocket won’t launch until 2030, which will get it into the game very late. It better be revolutionary or it won’t garner much business by then.

One comment

The wavy and beautiful edge of the northern ice cap of Mars

12:32 pm

The scarp of the north pole icecap on Mars
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on August 7, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows the many layered scarp that forms the edge of the northern polar ice cap on Mars, probably more than 2,000 feet high.

Those layers are significant, as they indicate the many climate cycles that scientists think Mars has undergone over the eons as the red planet’s rotational tilt, or obliquity, rocked back and forth from 11 degrees inclination to as much as 60 degrees. At the extremes, the ice cap was either growing or shrinking, while today (at 25 degrees inclination) it appears to be in a steady state.

Why the layers alternate light and dark is not known. The shift from lighter colors at the top half and the dark bottom half marks the separation between the top water ice cap and what scientists label the basal unit. It also marks some major change in Mars’ climate and geology that occurred about 4.5 million years ago.
» Read more

4 comments

Military satellite imagery to be obtained from competitive commercial market

9:18 am

Capitalism in space: The National Reconnaissance Office (NRO) is shifting how it gets the government’s military satellite surveillance imagery so that instead of having a long term contract with one company, multiple satellite companies will compete to provide the data.

Under this new imagery procurement, the NRO plans to buy products from multiple vendors and move beyond the current single-supplier arrangement that the National Geospatial Intelligence Agency signed more than a decade ago with DigitalGlobe, which is now Maxar Technologies. The NGA in 2017 turned over responsibilities for commercial imagery procurement to the NRO, while the NGA remains the primary buyer of commercial geospatial data analytics.

The NRO is expected to select at least three U.S. suppliers and structure the program with onramps for new providers. The agency also will require vendors to sign “end user license agreements” so imagery can be shared across government agencies without additional licensing fees.

This change illustrates how other government agencies are following NASA’s lead and shifting from controlling everything to buying the needed product from the open market. While NRO was getting imagery before from a commercial company, Maxar, depending on a single vendor limited competition and innovation while raising costs.

Buying the data from multiple companies means that NRO will get more choice for less cost.

6 comments
1 … 166 167 168 169 170 … 504