Category: Behind The Black

Curiosity’s future travels

2:11 pm

MRO image of Curiosity's future travels

In the December release of images from the high resolution camera on Mars Reconnaissance Orbiter (MRO), there was one image entitled “Monitor Region Near Curiosity Rover.” To the right is a reduced, cropped, and rotated section of that image, annotated by me to show Curiosity’s future planned route (indicated by the yellow line). If you click on the image you can see the untouched full resolution version.

Curiosity’s journey has not yet brought it onto the terrain shown in this image. (For the overall context of Curiosity’s travels, see Pinpointing Curiosity’s location in Gale Crater.) The rover is right now just off the left edge of the photograph, on the white ridge dubbed Vera Rubin Ridge visible in the uppermost left. This week it completed the last planned drill sampling on that ridge, and it will soon descend off the ridge and begin heading along the yellow route up the mountain. The white dots along its future route are the locations of recurring slope lines, believed to be seasonal seeps of brine coming from below and causing gentle landslides that darken the surface. As you can see, they hope to get very close to the first seep, and will observe the second from across the canyon from a distance of about 1,200 feet.

The peak of Mount Sharp is quite a distance to the south, far beyond the bottom of the photograph. Even in these proposed travels the rover will remain in the mountain’s lowest foothills, though the terrain will be getting considerably more dramatic.

Below is a full resolution section of the image showing the spectacular canyon to the south of that second seep. This is where Curiosity will be going, a deep canyon about 1,500 feet across and probably as deep, its floor a smooth series of curved layers, reminiscent of The Wave in northern Arizona. The canyon appears to show evidence of water flow down its slopes, but that is unproven.
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SpaceX raises a half billion for its Starlink satellite constellation

9:19 am

Capitalism in space: SpaceX has raised $500 million in investment capital to help fund its planned Starlink internet constellation expected to have just under 12,000 satellites in orbit.

I wonder if SpaceX will also be using this money for the development of Super Heavy/Starship. The article implies no, but the article also does not have access to the specific terms of the deal.

I also notice the interesting timing of this story today and yesterday’s story about how the Starlink satellites pose a threat of hitting people when they get de-orbited. Timing like this is rarely an accident. There are a lot of competitors to SpaceX who do not want it to succeed, and it would not surprise me if they are trying to throw a wrench in the operation to stop Starlink. A bad report like yesterday’s might cause big investors to back out.

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BepiColombo begins first operational engine burn

9:09 am

The European/Japanese mission to Mercury has begun the first operational firing of its four ion engines, set to last for the next two months.

This might seem like a ridiculously long burn, since most conventional rocket engines fire for minutes, not months. These are ion engines, however, far more efficient but producing a very tiny acceleration. It takes a long time for their burns to accumulate a velocity change.

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NASA approves Dream Chaser design

9:04 am

Capitalism in space? Sierra Nevada has, after several years of work, obtained NASA’s approval of the design of its Dream Chaser mini-shuttle, and will now begin construction.

I put a question mark in the header above because I am no longer sure Sierra Nevada is building a privately designed and privately owned spacecraft for the launch market. It seems that they have been captured entirely by NASA, and will instead be building the spacecraft NASA wants, which might raise costs enough to make this vehicle unaffordable for other customers.

The situation is understandable. Sierra Nevada does not have the independent capital that gives SpaceX its independence. It needs NASA to get this ship built, and thus will do whatever NASA demands. I just worry that NASA, unconcerned about cost (as is every agency in the federal government today), will spoil Dream Chaser’s viability in the commercial market.

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Trump administration reorganizes military space into single command

8:55 am

The Trump administration yesterday announced that it is doing what many in the military space sector have been proposing for several years. reorganizing all military space departments into a single command.

This is not a space force, but a realignment of the military bureaucracy in an effort to make space operations more focused and efficient. Whether it will actually do that I have my doubts. My impression from the news reports is that the military is using this as an opportunity to create a new upper management layer, thus increasing the size of bureaucracy.

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Today’s launch update

8:48 am

This post will change throughout the day. At the moment, India has successfully finished out the year with its seventh launch, placing an Indian military satellite into orbit with its GSLV rocket.

Seven launches matches India’s previous high from two years ago, but it is also far below their predicted 12 launches. I have a hunch next year will see that jump in launches, especially now that they have now successfully launched their GSLV rocket multiple times.

Meanwhile, Blue Origin is now targeting December 21, in two days, for its suborbital flight of New Shepard, while SpaceX decided to hold off on a launch today of an Air Force GPS satellite while it analyzes more closely the technical issue that scrubbed yesterday’s launch.

An Arianespace Soyuz rocket is set to launch a French military satellite from French Guiana very shortly, while a ULA Delta-4 Heavy is on track for the launch of a National Reconnaissance Office (NRO) spy satellite later today. I will provide updates later today.

UPDATE: Arianespace has successfully launched the French military satellite, using a Soyuz rocket. This was the eleventh launch for Arianespace this year, and its third Soyuz launch. Some might assign these Soyuz launches to Russia, but I consider them European launches because the business comes from Arianespace.

UPDATE: The ULA’s launch today was scrubbed due to the detection of a fuel leak. No word on when they will try again.

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Dark dunes, wedding cake mesas, and dust-filled gullies

1:06 pm

Dark dunes, wedding cake mesas, and dust-filled gullies

Cool image time! The photo on the right, reduced, rotated, and cropped slightly to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) and issued by the spacecraft science team in its December image release.

They didn’t give this image a caption. The release title, “Arabia Terra with Stair-Stepped Hills and Dark Dunes,” significantly understates the wild variety of strange features throughout this terrain. Normally I crop out one section of the photographs I highlight to focus on the most interesting feature, but I couldn’t do it this time. Click on the image to see the full resolution version. Take a look at the complex wedding cake mesas in the lower left. Look also at the streaks of dust that I think are filling the gullies between these hills. In the image’s upper left are those dark dunes, scattered between dust ripples and small indistinct rises and what appears to be a drainage pattern descending to the north. Interspersed with these dunes near the center of the image are several perched crater floors, indicating that the crater impacts happened so long ago that the surrounding terrain had time to erode away, leaving the crater floor hanging like a small plateau.

On the right the two largest mesas rise in even stair-stepped layers that would do the mesas in the Grand Canyon proud.

This could very well be the coolest image I have ever posted. Everywhere you look you see something different, intriguing, and entirely baffling.

Arabia Terra covers the largest section of the transition zone between Mars’s high cratered south and its low flat northern plains, where some scientists believe an intermittent ocean might have once existed. It lies to the east of Valles Marineris, and is crater-filled with numerous intriguing geology, as this image most decidedly illustrates. In this particular case it shows the floor of one of the region’s mid-sized craters.

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FCC: SpaceX’s Starlink satellites can kill

9:43 am

The sky is falling! The FCC has calculated that fragments from SpaceX’s planned Starlink constellation of almost 12,000 satellites pose a risk of landing on humans on Earth.

SpaceX estimates that several kilograms of each 386-kilogram Starlink could reach the Earth’s surface with sufficient energy to harm or kill someone. NASA has fixed this figure at 15 joules—about the same wallop as a baseball traveling at 51 kilometers per hour. Depending on the satellite’s configuration, iron thruster components, stainless steel reaction wheels, or silicon carbide mirrors could survive the journey from orbit to your head.

…In March and June 2017, the FCC calculated the aggregate risk to humans from the entire constellation. Assuming the 11,927 satellites are launched on a regular basis, they will fail in the same way. Starting around six years from the first launch, an average of five satellites a day will reenter the Earth’s atmosphere, each with a tiny chance of failing to completely burn up, resulting in a part that could hit someone.

But with more than a thousand satellites falling a year, those tiny risks add up. The FCC figured out that, over their lifetime, satellites in the LEO shells posed a 1 in 5 risk of hurting or killing someone, and the VLEO satellites carried a 1 in 4 risk. IEEE Spectrum’s calculations using SpaceX’s most up-to-date information suggests that the overall risk of debris from the constellation causing an injury or death will be 45 percent.

Rather than demanding that we restrict or change what SpaceX does, I see this as an opportunity for someone designing robot satellites designed to clean up space junk. Offer your services to SpaceX. They get their problem solved easily, and you make some money.

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Comparing Ryugu and Bennu

9:30 am

Link here. As much as they are alike, which is not surprising as they both come from the same asteroid family, the article notes the surprising differences.



Both asteroids are also liberally strewn with boulders – a challenge to mission planners on each team, who hope to descend close enough to scoop up samples for return to Earth. “It’s certainly more rugged than we had expected,” Lauretta says. 

But while boulders on Ryugu look to be unpleasantly ubiquitous, Bennu’s terrain is more varied, with more-obvious places where a safe touchdown might be possible. And, Lauretta notes, the OSIRIS-REx spacecraft is only recently arrived.

“We have a long time to explore and make the crucial decisions about where to go,” he says.

The biggest difference has to do with water. Even though scientists believe them to be portions of the same parent body, which broke apart between 800 million and one billion years ago, Bennu appears to be water rich, while Ryugu is less so. Within a week of arrival, infrared spectrometers on OSIRIS-REx were finding evidence of water-bearing minerals, and not just in localised patches. “We saw this in every single one of the spectra we have taken to date,” says Amy Simon, of NASA’s Goddard Space Flight Centre in Greenbelt, Maryland. 

One of the reasons Bennu was chosen as OSIRIS-REx’s target, Lauretta says, was the hope it would be rich in water, and possibly in organic compounds.

The similarities and differences in the samples both spacecraft will bring back will be most revealing.

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Three launches scrubbed

9:15 am

Capitalism in space: Both SpaceX and Blue Origin scrubbed planned launches today due to what appear to be minor technical issues.

SpaceX was launching a GPS satellite for the military, while Blue Origin was going to fly its New Shepard suborbital spacecraft on its third flight. SpaceX will try again tomorrow, while Blue Origin has not yet announced a new launch date.

Meanwhile, ULA’s attempt to launch a National Reconnaissance Office (NRO) spy satellite tonight with its most powerful rocket, the Delta 4 Heavy, faces bad weather, with only a 20% chance of launch.

UPDATE: I missed a third launch scrub today, Arianespace’s attempt to launch a trio of French military satellites using a Soyuz rocket from French Guiana. They will try again tomorrow.

This means there will be three launch attempts tomorrow, since India plans a launch of its GSLV rocket as well.

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New Horizons sees no hazards, will do closest fly-by of Ultima Thule

9:04 am

After three weeks of intense observations and seeing no significant objects orbiting close to the Kuiper Belt object Ultima Thule, the New Horizons team has decided to go for the closest fly-by on January 1, 2019.

After almost three weeks of sensitive searches for rings, small moons and other potential hazards around the object, New Horizons Principal Investigator Alan Stern gave the “all clear” for the spacecraft to remain on a path that takes it about 2,200 miles (3,500 kilometers) from Ultima, instead of a hazard-avoiding detour that would have pushed it three times farther out. With New Horizons blazing though space at some 31,500 miles (50,700 kilometers) per hour, a particle as small as a grain of rice could be lethal to the piano-sized probe.

We should begin to see more detailed images soon. Because of the speed in which New Horizons is traveling, it will not get very close until it is almost on top of Ultima Thule, so the best images will all occur over a very short span of time.

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Saturn’s rings are dying

8:56 am

Using new ground-based observations, scientists now predict that Saturn’s rings are dying at the fastest predicted rate, and will disappear within 300 million years, at the most.

Dr Tom Stallard, Associate Professor in Planetary Astronomy at the University of Leicester and Dr James O’Donoghue, who studied for his PhD at the University of Leicester, have found that Saturn’s rings are dying at the maximum rate estimated from Voyager 1 and 2 observations made decades ago.

The rings of ice are being pulled into Saturn by gravity as particles of ice under the influence of Saturn’s magnetic field. Dr O’Donoghue, who now works at NASA’s Goddard Space Flight Center in Greenbelt, Maryland said: “We estimate that this ‘ring rain’ drains the equivalent of an Olympic-sized swimming pool from Saturn’s rings in half an hour. The entire ring system will be gone in 300 million years.”

Dr O’Donoghue believes that the rings could even disappear quicker than this. “Add to this the Cassini-spacecraft detected ring-material falling into Saturn’s equator, and the rings have less than 100 million years to live.”

Over the decades I have read numerous papers by scientists saying that rings this bright and large must be a relatively short-lived event, and that we are lucky to have seen them. This research only reinforces this conclusion.

At the same time, we do not yet know the frequency or the cause of the events that give rise such bright rings. It could be that such rings are short-lived, but happen frequently enough that it is still not rare to see them in any solar system. And we won’t know this until we get a more complete census of many solar systems, seen up-close.

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“What do we do now?“

12:33 pm

LM ascent engine

One of the advantages one gets from writing books and giving lectures about them is that you get to see some interesting places and meet some interesting people. This is what happened to me last week when I gave two lectures about the Apollo 8 mission to the Moon on consecutive nights to three different Buffalo aerospace organizations at two different venues. My entire visit was as a guest of the Niagara Frontier Section of American Institute of Aeronautics and Astronautics, as part of its Distinguished Lecturer program, something I have participated in now for almost a decade.

The first lecture was at the Niagara Aerospace Museum. Prior to my evening talk Don Erwin, a member of the museum’s board of trustees, gave me detailed tour of the museum and its holdings, which include a wealth of artifacts going back to the very beginnings of flight and running through the Apollo lunar missions. Many of aviation’s first innovators came from the western New York area, and the companies they created ended up building important components for the later U.S. effort to get to the Moon.

looking into ascent engine nozzle

Above on the right is one of their more significant artifacts, a lunar module ascent engine. Built mostly by Bell Aerospace, this particular engine was used to test the engine to make sure the design would work. It had to work, by the way, since it had no back-up and if it failed then the astronauts would have been stranded on the Moon.

Since it really only had to work reliably once, however, the nozzle was made of ablative material rather than a heavier metal. The second image on the right looks into that nozzle, where you can see the result of the various test firings done to prove out the engine. There is obvious wear to the interior of the nozzle.

What made this museum especially fun was how accessible everything was.
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Astronomers discover most distant solar system object so far

9:17 am

Worlds without end: Astronomers have discovered a dwarf planet about 300 miles in diameter orbiting the Sun at a distance of 120 astronomical units, making it the most distant solar system object discovered so far.

“2018 VG18 is much more distant and slower moving than any other observed Solar System object, so it will take a few years to fully determine its orbit,” said Sheppard. “But it was found in a similar location on the sky to the other known extreme Solar System objects, suggesting it might have the same type of orbit that most of them do. The orbital similarities shown by many of the known small, distant Solar System bodies was the catalyst for our original assertion that there is a distant, massive planet at several hundred AU shepherding these smaller objects.”

“All that we currently know about 2018 VG18 is its extreme distance from the Sun, its approximate diameter, and its color,” added Tholen “Because 2018 VG18 is so distant, it orbits very slowly, likely taking more than 1,000 years to take one trip around the Sun.”

I guarantee there are more of these discoveries to come. Many more.

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Obamacare struck down by judge

8:02 am

A federal judge in Texas on Friday ruled that the entire Obamacare law is no longer valid based on changes passed by the Republican Congress in the past two years.

U.S. District Judge Reed O’Connor in Fort Worth sided with the argument put forward by a coalition of Republican-leaning states, led by Texas, that Obamacare could no longer stand now that there’s no penalty for Americans who don’t buy insurance.

The U.S. Supreme Court had upheld the law in 2012, by classifying the legislation as a tax. But since Congress removed the individual mandate in 2017, O’Connor ruled, there’s no way the ACA can be allowed to stand.

“The Individual Mandate can no longer be fairly read as an exercise of Congress’s Tax Power and is still impermissible under the Interstate Commerce Clause — meaning the Individual Mandate is unconstitutional,” O’Connor wrote. “The Individual Mandate is essential to and inseverable from the remainder of the ACA.”

Without the system being upheld by a wide pool of mandated participants, the ACA cannot stand, O’Connor ruled.

All of this has been unconstitutional from day one, but what does that matter in the banana republic we now live in, where childish twitter mobs rule, unelected bureaucrats have more legal power than presidents, and elected officials can pick and choose the laws they obey?

Trump, returning to his liberal roots, immediately called for a new law to protect “pre-existing conditions.” To quote his tweet: “Now Congress must pass a STRONG law that provides GREAT healthcare and protects pre-existing conditions. Mitch and Nancy, get it done!”

Forcing insurance companies to accept anyone, regardless of their health, makes insurance impossible. Why would anyone buy insurance when they are healthy under Trump’s system? Instead, everyone will wait until they are diagnosed with an illness, and buy the insurance then. Lacking a pool of healthy customers, insurance companies will go bankrupt.

The silver lining here is that Congress is divided, and might find it impossible to make a deal. At the same time, I would not be surprised if both parties teamed up to give voters this fake present, continuing our slide to bankruptcy.

In the meantime, expect the reappearance of low-cost catastrophic insurance plans, the kind of plans that Obama called “junk” and banned with Obamacare, but provide lower-class people without a fancy health plan an affordable way to insure themselves against a ruinous illness or accident.

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Parabolic Arc’s annual fund-raising campaign

10:55 am

Doug Messier’s space website, Parabolic Arc, is running its annual fund-raising campaign right now, and I would like to urge my readers to consider giving a donation.

Doug and I might disagree on some matters, but the work we both do at our websites complements each other quite nicely. In fact, the areas where we disagree actually enhances this fact, as you will get different perspectives of the same issues from us.

The bottom line is that anyone who checks out both Parabolic Arc and Behind the Black on a daily basis will pretty much find out everything that is happening in space, and get that news before anyone else. Your donations there will thus be greatly appreciated.

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Rocket Lab completes its third successful launch in 2018

12:27 am

Capitalism in space: Rocket Lab today (Sunday) successfully launched thirteen cubesats using its Electron rocket.

With this third launch, Rocket Lab now has more launches than Northrop Grumman (formerly Orbital ATK), a launch operation that has been around since the 1980s.

The leaders in the 2018 launch race remain unchanged:

35 China
20 SpaceX
13 Russia
10 Europe (Arianespace)
8 ULA

China still leads the U.S. 35 to 33 in the national rankings.

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NASA’s warped measure of safety

11:39 am

In posting an invitation to social media users to attend the launch of the first unmanned test flight of SpaceX’s man-rated Dragon capsule on January 17, 2019, NASA’s public relations department added the following warning:

NASA has a series of reviews before the uncrewed test flight, and the outcome of these reviews, including the Flight Readiness Review, will ultimately determine the Demo-1 launch date.

For months I have reported numerous examples of NASA’s safety panel acting to create fake problems that will force a delay in this launch. First it was the fueling method. Then it was the insulation on the helium tanks. Then there was the need for SpaceX to fill out all the paperwork. Now it is the parachute system and worries about the safety culture at SpaceX.

I might take these concerns seriously, except that NASA’s safety panel seems to be so sanguine about far more serious safety issues with NASA’s SLS rocket and Orion capsule. This double standard is starkly illustrated once again in this NASASpaceflight.com article about NASA’s plans for the very first manned Orion/SLS mission.

On that manned mission, NASA will fly a host of new equipment for the first time. For example, the capsule’s “Environmental Control and Life Support System (ECLSS), crew displays, and other crew systems will be making their debut in Orion.” Anything else that has flown previously will essentially have done so only once, during the first unmanned test flight of SLS/Orion.

It gets worse. While NASA has demanded SpaceX fly the final manned version of its Falcon 9 rocket seven times before it will allow its astronauts on board, the agency plans to launch humans on SLS on only its second launch. More astonishing, that second launch will include a mission taking those astronauts on a loop around the Moon.

During the Apollo missions in the 1960s, NASA had a policy that no mission would head to the Moon without carrying a lunar module (LM). The logic was that the LM would act as a lifeboat should something go wrong with the Apollo capsule, a logic that was actually proven during Apollo 13.

NASA did send Apollo 8 to the Moon without the LM, but it did so in the context of a Cold War space race and an end-of-the-decade commitment by an assassinated president. The agency then knew the risks were high, but it decided the situation justified those risks.

NASA is not faced with a Cold War space race today. Instead, it has a grossly over-budget and long delayed boondoggle called SLS/Orion, increasingly embarrassed by the quick and efficient achievements of private space companies. In a desperate effort to keep that boondoggle alive, the agency is apparently pushing it to fly it too soon and with inadequate development. In fact, it appears to me that the safety culture at NASA that caused both shuttle accidents (a desire to favor frequent launches while ignoring safety analysis) has returned at NASA, and it has done so with a vengeance.

Meanwhile, the contrast with how the agency’s safety panel treats SpaceX versus SLS/Orion demonstrates how corrupt and unreliable that safety panel has become. They no longer really work to reduce risk. Their goal appears to promote government-built rocket systems over those manufactured by the private sector.

Hat tip to Kirk Hilliard for pointing out the language in the NASA pr invite to the SpaceX launch.

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Launchpad contractor at Vostochny in legal and financial trouble

3:38 pm

The launchpad contractor hired to build the Angara launchpad at Russia’s new spaceport in Vostochny has serious legal and financial troubles, including lawsuits for nonpayment and non-completion of work.

I have nothing to say, other than this seems entirely par for the course.

Posted in warm, sunny, and dry Tucson, having finally returned from two weeks of travel to New York and Israel.

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Two dead at U.S. Antarctic station

1:12 pm

An accident of some kind has apparently killed two individuals at the U.S. McMurdo station in Antarctica yesterday.

The National Science Foundation says two technicians working on a fire-suppression system at an Antarctica scientific station were found unconscious and died.

The foundation said Wednesday the two had been working in a building at McMurdo Station, which is on Ross Island. It says they were found on the floor by a helicopter pilot who had landed after spotting what appeared to be smoke from the building.

Nothing more is as yet known.

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Trace Gas Orbiter finds no methane on Mars

11:31 am

The uncertainty of science: Europe’s Trace Gas Orbiter (TGO) has failed to detect any methane in Mars’ atmosphere, even though data from Mars Express in 2004 had said it should see some.

The Mars Express orbiter first detected hints of methane in the martian atmosphere in 2004. But some scientists said the orbiter’s instruments that found it—at a level of 10 parts per billion (ppb)—weren’t sensitive enough to produce reliable results. Ten years later, NASA’s Curiosity rover detected a methane spike of 7 ppb from its base in Gale crater, which lasted several months. Several years later, Curiosity’s scientists then discovered a minute seasonal cycle, with methane levels peaking at 0.7 ppb in the late northern summer.

To settle this mystery, the European Space Agency’s Trace Gas Orbiter (TGO), which arrived at Mars in 2016, this year began to scan the atmosphere for methane. Two of the TGO’s spectrometers—a Belgian instrument called NOMAD and a Russian one called ACS—were designed to detect methane in such low concentrations that researchers were sure they would. Both instruments, which analyze horizontal slices of the martian atmosphere backlit by the sun, are working well, scientists on the team said today at a semiannual meeting of the American Geophysical Union in Washington, D.C. There’s still some noise to clean up, said Ann Carine Vandaele, NOMAD’s principal investigator and a planetary scientist at the Royal Belgian Institute for Space Aeronomy in Brussels, in her talk. “But we already know we can’t see any methane.”

The team’s initial results show no detection of methane down to a minute level of 50 parts per trillion, with their observations going down nearly all the way to the martian surface.

The data says that any methane seen on the surface (such as by Curiosity) must be coming from below, not from off world, which in itself is a surprise since the scientists expected some methane to be coming from interplanetary dust. TGO has found none..

There are a lot of uncertainties still, so stay tuned.

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Why ULA picked Blue Origin’s engine over Aerojet Rocketdyne

11:22 am

In an interview of ULA’s CEO Tory Bruno by Eric Berger of Ars Technica, he subtly revealed why his company in the end favored Blue Origin’s BE-4 rocket engine over Aerojet Rocketdyne’s AR-1 in the design of the Vulcan rocket.

Unlike many of the new entrants that you talk about coming in today, we’re not a startup company living off investor capital; we’re a mature business. We have to close a business case on Vulcan itself. So where our strategic partners [Editor’s note: This is a reference to Blue Origin] brought investment as well as schedule, that was a pretty important factor. It became pretty obvious what the right choice was, and we arrived at it with our stakeholders.

In other words, Blue Origin’s willingness to invest its own capital in engine development was a major factor. Aerojet Rocketdyne was using the old model of big space, whereby all development money came from the government. It had been unwilling to commit any of its own funds to engine development. This reluctance implied it wasn’t really committed to the project. If Air Force funding disappeared, they’d back out, leaving ULA in the lurch.

This tidbit from Bruno also suggests that he and the management at ULA are sincerely working to reshape ULA from an old big space company, totally reliant on the subsidies given by the government, into a modern competitive company focused instead on building an affordable product that customers will want to buy.

This story also tells us a lot about Aerojet Rocketdyne’s future, or lack thereof. The rocket industry is changing, and if that company doesn’t change also, it will soon die.

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