Tag: spaceflight

Using fish to study bone loss in weightlessness

9:04 pm

A Japanese experiment on ISS, comparing the development of fish in weightlessness with those on the ground, has provided` scientists more information about bone density loss in weightlessness.

Akira Kudo at Tokyo Institute of Technology, together with scientists across Japan, have shown that medaka fish reared on the International Space Station for 56 days experienced increased osteoclast activity – bone cells involved in the re-absorption of bone tissue – likely leading to a subsequent reduction of bone density. They also found several genes that were upregulated in the fish during the space mission. The team generated fish with osteoclasts that emit a fluorescent signal. They sent 24 fish into space as juveniles, and monitored their development for 56 days under microgravity. The results were compared with a fish control group kept on Earth.

Kudo and his team found that bone mineral density in the pharyngeal bone (the jaw bone at the back of the throat) and the teeth of the fish reduced significantly, with decreased calcification by day 56 compared with the control group. This thinning of bone was accompanied by an increase in the volume and activity of osteoclasts. The team conducted whole transcriptome analysis of the fish jaws, and uncovered two strongly upregulated genes (fkbp5 and ddit4), together with 15 other mitochondria-related genes whose expression was also enhanced. Reduced movement under microgravity also has an influence. The fish began to exhibit unusual behavior towards the latter stages of their stay in space, showing motionless at day 47.

What the data mostly confirms is that long-term weightlessness is a bad thing for the development of bones, and not just in humans. Whether scientists can use these results to counter these harmful effects is not clear, however.

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First rocket arrives at Vostochny

8:25 am

The competition heats up: The Russians have now delivered to Vostochny the first Soyuz rocket for launch from that spaceport.

The launch is still planned for December, though no one would be surprised if it got delayed.

One minor but interesting thing to note at the link above. The pictures of the train and the containers holding the rocket sections were taken by none other than Dmitry Rogozin, the Russian deputy prime minister whom Putin himself has placed in charge of the construction of Vostochny. This is as if Obama put Biden in charge of NASA’s SLS program, and Biden himself took pictures of some construction event for the news media.

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Rosetta data reveals how a comet evaporates

9:57 am

Newly released Rosetta data has shown, for at least one area on the surface of Comet 67P/C-G, the process by which the surface ice is replaced by water ice from below as the comet rotates and sunlight causes the surface ice to evaporate away.

The data suggest that water ice on and a few centimetres below the surface ‘sublimates’ when illuminated by sunlight, turning it into gas that then flows away from the comet. Then, as the comet rotates and the same region falls into darkness, the surface rapidly cools again. However, the underlying layers remain warm owing to the sunlight they received in the previous hours, and, as a result, subsurface water ice keeps sublimating and finding its way to the surface through the comet’s porous interior.

But as soon as this ‘underground’ water vapour reaches the cold surface, it freezes again, blanketing that patch of comet surface with a thin layer of fresh ice. Eventually, as the Sun rises again over this part of the surface on the next comet day, the molecules in the newly formed ice layer are the first to sublimate and flow away from the comet, restarting the cycle.

They discovered this process when they noticed surface ice evaporating in this region during the comet’s 6-hour day and then getting resurfaced with ice during the comet’s 6-hour night.

Meanwhile, Rosetta is about to move as much as 1500 kilometers away from the comet for several weeks so that its scientists can study its coma more broadly.

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Aerojet is considering increasing its $2 billion offer to buy ULA

9:29 am

The competition heats up: A news report today suggests that Aeroject Rocketdyne is considering increasing its $2 billion bid to buy ULA, thus forcing that company to use its rocket engines rather than Blue Origin’s.

The article contains a lot of information that helps explain the background behind Aerojet Rocketdyne’s offer as well as ULA’s recent switch to Blue Origin. For one thing, ULA apparently dumped Aeroject because the company refused to invest any of its own money in developing a new rocket engine.

Last summer, Aerojet’s board also rejected ULA’s request that Aerojet invest $300 million to accelerate work on the AR-1 engine it is developing as an alternative to the Russian RD-180 engine that powers ULA’s Atlas V rocket, the sources said. … Aerojet’s refusal to invest more in the AR-1 engine ultimately drove ULA to opt for the BE-4 engine being developed by privately held Blue Origin, which is owned by Amazon.com founder and billionaire Jeff Bezos, the sources said.

More significant, it appears that the Rocketdyne portion of the company is owned by the Russians!

An Aerojet takeover of ULA would also require Russia to give its regulatory approval and transfer a technology license for use of the RD-180 engines, according to two of the sources. Russia refused to transfer the license to Aerojet when it bought Rocketdyne from Pratt & Whitney, a United Technologies Corp (UTX.N) unit in 2013, forcing Pratt to retain control of a small company that brokers RD-180 sales, and could be more reluctant to do so now, the sources said.

While the quote above is somewhat confusing, it certainly suggests that, with Congress banning the use of Russian-built engines in American rockets, using Aerojet Rocketdyne engines by ULA has become problematic.

In related more bad news for Aeroject Rocketdyne, the company has just agreed to pay Orbital ATK $50 million in connection with last year’s Antares launch failure. In addition, they will take back the Russian-built engines they refurshed and sold to Orbital. The agreement also ends the company’s part in Antares.

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China debuts another new rocket

9:10 am

The competition heats up: China successfully completed the first launch of another new rocket today, putting three technology satellites into orbit with its solid-fueled Long March 11 rocket.

The Long March-11 (Chang Zhwng-11) is a small solid-fueled quick-reaction launch vehicle developed by the China Academy of Launch Vehicle Technology (CALT). It’s goal is to provide an easy to operate quick-reaction launch vehicle, that can remain in storage for long period and to provide a reliably launch on short notice. Very little is known about the rocket, with only one badly taken photo available on the internet. However, LM-11 is known to be a solid-fueled launch vehicle equipped with a liquid-fueled trim stage.

Moreover, the three satellites the rocket put in orbit are cubesats designed to test formation flying technologies. This puts China in the forefront of the effort to make these tiny satellites capable of doing what larger satellites now do, thus making possible the eventual replacement of those more costly larger satellites.

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New Pluto images

4:07 pm

thumbnail of Pluto closeup

Cool image time! The New Horizons team has released some new images. A thumbnail of what I think is the most interesting image is shown on the right. Be sure to look at the full resolution image. It shows a flat plain of what look like frozen polygon plates with a thin layer of what appear to be dunes. In the center some rocks poke out like islands, with what looks like a wind-swept wake to the right. The wake could be caused by Pluto’s very thin atmosphere. Or maybe there are currents that slowly push the frozen plates past the harder rocks (which probably are ice, which in Pluto’s very cold environment has the structural strength of granite).

These images were posted on the New Horizons website with no accompanying press release. I think the science team has decided it will just upload them, and reserve press releases for when they have accumulated enough data to announce some intelligent conclusions. Right now, they can only speculate as wildly as I from these images. It is reasonable to give them the time to assess the data more closely before announcing any explanations. At the same time, we should also congratulate them for posting the images immediately so that others can see them.

Update: a press release was released, though it really doesn’t add much except review the images.

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Boeing reveals landing sites for Starliner

11:33 pm

The competition heats up: Boeing has revealed the prime landing sites for its manned Starliner capsule.

Boeing is still finalizing a list of five candidate landing sites in the Western United States, but the U.S. Army’s White Sands Missile Range in New Mexico and the Army’s Dugway Proving Ground in Utah will initially be the prime return locations, said Chris Ferguson, deputy manager of the CST-100 Starliner program. The capsules will parachute to airbag-cushioned landings after each mission, beginning with the CST-100’s first test flights in 2017.

The article also outlines the overall status of Starliner, including what sounds to me like some scheduling and design concerns:

Boeing is taking a different approach to development of its human-rated spacecraft than SpaceX, which has already completed a pad abort test and plans an in-flight abort demo in late 2016. SpaceX is testing as it goes, while Boeing is doing more design work up front. “A lot of focus is on ensuring, at this phase, that we’ve got full rigor in all our processes and all of our designs, really trying to buy down the risk that something could come up downstream to perturbate either our design or our schedule,” Mulholland said.

Boeing plans no such in-flight escape test, and Mulholland said it can prove out the CST-100 abort system through wind tunnel analyses. “That’s our philosophy — to make sure we don’t run a test just to go run a test,” Mulholland said. “We make sure we fully understand all the requirements that we need to certify to, and we pick the best approach.”

Mulholland said the sequence of test flights in 2017 is tight, but Boeing’s schedule has margin to achieve the start of operational missions by the end of that year. Managers decided to move the pad abort test from early 2017 to August, a change that Mulholland said created more margin in the schedule leading to the first crew flight. [emphasis mine]

The lack of an in-flight test of the abort system is worrisome. This sounds just like NASA and Boeing in the shuttle era when they repeatedly made overconfident claims about the shuttle’s reliability and safety that were completely unrealistic, based not on tests but on computer simulations. The tight schedule also is a concern, especially because of the corporate culture of Boeing, which has a history of using these contracts to squeeze money from the government while putting a low priority on actually building anything.

I fear that might be what is happening here, especially since Boeing, unlike SpaceX, refused to build much of anything prior to the announcement of its Starliner contract. The company does not like to take any risks at all.

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GAO criticizes the staff and budget request of FAA’s commercial space office

11:12 pm

A GAO report has concluded that the FAA has not provided sufficient justification for its 2016 requested budget and staff increases for its Office of Commercial Space Transportation (AST).

AST requested an additional $1.5 million more plus an increase of its staff by 13 to handle what it expects to be an increase in commercial launches. However,

The GAO report cautioned about using predictions of launches as a reason for hiring additional staff because, in recent years, “the actual number of launches during those years was much lower than what FAA projected.” In one example, the FAA projected it would license more than 40 launches and reentries in 2014, but the actual number was about 20.

The report also revealed a split among companies in the commercial launch business about the importance of increasing AST’s budget. While industry organizations like the Commercial Spaceflight Federation have expressed their support for the proposed budget increase, only three of the nine companies surveyed by the GAO believed the office has insufficient resources to deal with its workload. Three other companies thought the office has sufficient resources, and the remaining three expressed no opinion. The report did not identify which companies held those opinions, but did list the nine companies contacted by the GAO: Blue Origin, Boeing, Masten Space Systems, Orbital ATK, SpaceX, United Launch Alliance, Virgin Galactic, Vulcan Aerospace and XCOR Aerospace.

The second paragraph in the quote above suggests that a majority of the private companies that AST would regulate are not enthused about giving that government agency more resources or abilities. To me, I suspect that the phrase “We’re here to help you!” and what it usually signifies about the government has something to do with that lack of enthusiasm.

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ULA and Orbital ATK ink new rocket motor contract

10:55 pm

The competition heats up: ULA has signed a new contract with Orbital ATK to provide solid rocket motors for its Atlas 5 and Vulcan rockets.

This deal is another nail in the coffin of Aerojet Rocketdyne, as it strongly suggests that the corporate leadership at ULA is very uninterested in doing any business with that rocket engine builder. Recently they have been taking their business every where but to Aerojet.

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Long March 6 launch a success

9:12 pm

The competition heats up: The first launch of China’s smallsat rocket Long March 6 was a success on Saturday, putting 20 satellites into orbit.

This rocket is part of a new family of Chinese rockets, modularly designed so that can be reconfigured depending on payload or mission. The big launch however will be next year, when they attempt the first test flight of the largest member of this family.

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Changes on the surface of Comet 67P/C-G

6:16 pm

In a science paper now accepted for publication, the Rosetta science team have described changes that have occurred on the surface of Comet 67P/C-G from May through July of this year as the comet moved closer to the Sun and activity increased.

The changes were seen in a smooth area dubbed Imhotep.

First evidence for a new, roughly round feature in Imhotep was seen in an image taken with Rosetta’s OSIRIS narrow-angle camera on 3 June. Subsequent images later in June showed this feature growing in size, and being joined by a second round feature. By 2 July, they had reached diameters of roughly 220 m and 140 m, respectively, and another new feature began to appear.

By the time of the last image used in this study, taken on 11 July, these three features had merged into one larger region and yet another two features had appeared.

Be sure to click on the link to see the images. The changes look like a surface layer is slowing evaporating away.

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China to launch new rocket today

7:54 am

The competition heats up: With the expected first launch of China’s new Long March 6 rocket today, this report nicely outlines the status of the country’s rocket program.

Like Russia’s Angara and SpaceX’s Falcon, the new generation of Long March rockets are modular and use the same rocket engine. This has reduced cost and allows for faster assembly. The launch today is the maiden flight of the smaller member of this family. The key launch will be that of the larger Long March 5, scheduled for next year. Capable of putting 25 tons in orbit (five more than Proton), this is the rocket they plan to use to launch the modules for their full-sized space station.

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Audit finds Obama administration complicent in the Obamacare website fraud and cost overruns

10:17 pm

Finding out what’s in it: A federal audit has found that the Obama administration looked the other way, and in some cases even helped, while the contractors hired to create the Obamacare website committed significant fraud and negligence.

The investigation focused on nearly two dozen contracts considered to be most important to the operation of the website, which was supposed to create a marketplace that serves as a one-stop shop for health insurance. Instead, it’s had a multitude of problems that have been well-documented in the media. The deals to develop this federal insurance marketplace went mostly to eight politically connected companies that raked in north of $600 million, the IG’s report says. “As of March 31, 2014, CMS had identified 62 contracts that it had awarded to 35 different contractors to develop, implement, and operate the Federal marketplace,” the report states.

That means there are a lot of taxpayer dollars floating around for this cause. You’d think the government would select its finest employees to oversee the deals. Instead, CMS violated federal rules by assigning unqualified employees to oversee contracts worth more than $10 million, according to the audit. In one case an unqualified agency employee, who didn’t even have lower-level certification to supervise contracts over $25,000, oversaw a $130 million deal for more than a year. In a separate case documented by the IG, an unauthorized CMS worker allowed an eye-popping $28 million cost overrun that wasn’t even identified until the agency finally assigned a more knowledgeable staffer to take over the deal.

These atrocious examples are probably not the half of it because CMS couldn’t even provide investigators with routine documents that should have been readily available. That means there’s no telling the true magnitude of the damage. As for accountability, there appears to be none as is often the case in government. The Obama officials—former HHS Secretary Kathleen Sebelius and former CMS head Marilyn Tavenner—in charge of this boondoggle are both gone and it’s highly unlikely either will face any consequences.

Hey, what’s a little graft and embezzlement of tax dollars among friends? Besides, they are Democrats, and we always forgive Democrats for their corrupt practices. More important, it is never their fault. Bush and Reagan and that evil right wing conspiracy is obviously to blame.

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New images from Pluto

3:32 pm

Mountains and glaciers on Pluto

Cool image time! As expected, the New Horizons team has made its weekly press announcement, though on Thursday instead of Friday, releasing new images taken by the spacecraft during its July 14 flyby.

The image above has been cropped and reduced by me to fit. Make sure you look at the full resolution image.

Just 15 minutes after its closest approach to Pluto on July 14, 2015, NASA’s New Horizons spacecraft looked back toward the sun and captured a near-sunset view of the rugged, icy mountains and flat ice plains extending to Pluto’s horizon. The smooth expanse of the informally named Sputnik Planum (right) is flanked to the west (left) by rugged mountains up to 11,000 feet (3,500 meters) high, including the informally named Norgay Montes in the foreground and Hillary Montes on the skyline. The backlighting highlights more than a dozen layers of haze in Pluto’s tenuous but distended atmosphere. The image was taken from a distance of 11,000 miles (18,000 kilometers) to Pluto; the scene is 230 miles (380 kilometers) across.

The mountains are made of ice, the glacier flows of nitrogen.

The main takeaway so far is that Pluto might have a “hydrological” cycle like Earth’s, but instead of water cycling from ice to water to gas to rain, it appears it is nitrogen and other strange materials.

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ULA rejects Aerojet Rocketdyne $2 billion bid to buy company

4:41 pm

The competition heats up: Boeing today said that it has rejected Aerojet Rocketdyne’s $2 billion bid to buy ULA, the Boeing/Lockheed launch partnership.

“The unsolicited proposal for ULA is not something we seriously entertained,” Boeing spokesman Todd Blecher said. Boeing said it remained committed “to ULA and its business, and to continued leadership in all aspects of space, as evidenced by the agreement announced last week with Blue Origin,” a company owned by Amazon.com founder Jeff Bezos that is designing the engine for a new rocket being designed by ULA.

Lockheed declined comment, saying it did not discuss transactions with other companies. A source familiar with the matter said Lockheed’s refusal to comment did not reveal any disagreement between Lockheed and Boeing, and both companies agreed to reject the bid.

This might not end the issue, as Aerojet Rocketdyne officials might still follow up with a more formal proposal.

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NASA delays first Orion manned flight two more years

4:02 pm

Surprise, surprise! NASA today announced that the first manned flight of the Orion capsule will likely be delayed two more years to 2023.

Orion has been under development since 2006, and is expected to have cost more than $17 billion when that first mission flies in 2023. SLS, once called Constellation but with a different configuration, has been under development since 2011, and has cost about that much through today. All told, I would estimate that by the time that flight occurs in 2023 (assuming it doesn’t get delayed again) NASA will have spent more than $40 billion.

This is a joke, but a very painful one. It is going to take NASA almost two decades to get one capsule off the ground. Compare that with the 1960s space race, where we went from nothing to landing on the Moon in a little more than eleven years.

If NASA had been spending this money on planetary missions, they might actually have been doing something worthwhile with it. Meanwhile, the private companies, SpaceX, Blue Origin, Boeing, Orbital ATK, are building capsules and rockets that are as capable, if not more so, and are getting them built now for less than a quarter that price, in the range of about $6 to $8 billion.

If our elected officials in Congress had any brains, they would shut Orion/SLS down now, and save the taxpayers an awful lot of money.

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Aerojet Rocketdyne lobbies its rocket engines to Congress and ULA

8:39 am

The competition heats up: Officials at Aerojet Rocketdyne yesterday lobbied hard for Congress and ULA to finance and buy their new AR-1 engine, designed to replace the Russian engines used in the Atlas 5 rocket.

More here, including the threat by those officials that the development of the engine could slip past 2019 if Congress doesn’t give the company more money.

The first comment at the bottom of the page of the first article above I think possibly outlines some of the reasons behind Aerojet Rocketdyne’s bid to buy ULA.

The development of the Blue Origin BE-4 is underway, and a launch vehicle like the proposed Vulcan would certainly be an asset to national security and commercial space development. But, as was stated, such a LNG/LO2 vehicle would need a different infrastructure to support it. ULA’s Atlas V is the most mature and reliable [launch vehicle] we have. The problem with it is a political one, because of its using the Russian RD-180 engine. From what has been published, plugging the BE-4 into an Atlas V is a non-starter; the BE-4 is meant for the Vulcan…if ULA can obtain funding on something more than a per-quarter schedule! Aerojet-Rocketdyne’s AR-1 would be a more logical choice to replace the RD-180, BUT…ULA won’t release the Interface Control Documents (ICD’s) to Aerojet-Rocketdyne. Hence, AR’s attempt to buy ULA.

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Blue Origin announces it will launch from Florida

9:34 am

The competition heats up: In a press conference today, Jeff Bezos of Blue Origin announced that his company will be making Cape Canaveral, Florida, its launchpad for their planned commercial orbital spacecraft.

Not only will they launch from a former Air Force launch complex, they will be building their production facility there for assembling their reusable ships. Bezos also said that they hope to be flying by the end of the decade.

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Yearlong mission on ISS reaches halfway point

9:25 am

The yearlong manned mission on ISS is now halfway over.

If they complete their planned 341-day mission through March, Mark Kelly and Mikhail Kornienko will have logged the fifth and sixth longest human flights in space. They will not complete a full year in space, (as has been advertised by NASA), something that four Russians did in their Mir space station, including one flight of fourteen and a half months.

I had not realized that this mission was not actually a complete year until I read the story above. In reality, they are actually only spending just over eleven months in space. I find this very disappointing. The whole reason to have ISS is to do these long missions. To cut this short of a year seems silly. If anything, they should take advantage of the situation and try to push to break the longevity mission of 14.5 months.

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Virgin Galactic announces changes to LauncherOne

9:14 am

Though this BBC news article is really nothing more than a propaganda piece for Virgin Galactic, the announcement it describes does confirm what has been suspected by space experts for months, that the company is reconfiguring LauncherOne to be more powerful and to launch on a bigger airplane, not WhiteKnightTwo.

In reading the quotes in this article from the various Virgin Galactic officials, I come away feeling even less confident of this company’s ability to get this rocket off the ground. To me, they sound like they are improvising wildly as they go, have no clear long term plan, and thus will have significant trouble settling on a final design early enough so that they will be able to build it intelligently.

I hope I am wrong. The report does suggest however that their investment in WhiteKnightTwo is increasingly appearing to be a waste. They won’t use it for LauncherOne, and their effort to launch SpaceShipTwo with it appears to be slowly vanishing.

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Astronomers find no evidence of nearby alien civilizations

8:33 am

New observations of the best candidate galaxies now suggests that very advanced civilizations are very rare or don’t exist in the local universe.

They looked at several hundred nearby galaxies that emitted a high amount of mid-infrared radiation, which could possibly be produced as the waste heat from civilizations using energy on galactic scales.

Professor Michael Garrett (ASTRON & University of Leiden) has used radio measurements of the very best candidate galaxies and discovered that the vast majority of these systems present emission that is best explained by natural astrophysical processes. In particular, the galaxies as a sample, follow a well-known global relation that holds for almost all galaxies – the so-called “Mid-Infrared Radio correlation”. The presence of radio emission at the levels expected from the correlation, suggests that the mid-IR emission is not heat from alien factories but more likely emission from dust – for example, dust generated and heated by regions of massive star formation.
As Professor Garrett explains: “the original research at Penn State has already told us that such systems are very rare but the new analysis suggests that this is probably an understatement, and that advanced Kardashev Type III civilisations basically don’t exist in the local Universe. In my view, it means we can all sleep safely in our beds tonight – an alien invasion doesn’t seem at all likely!”.

Joking aside, Professor Garrett is still looking at a few candidate galaxies that lie off of the astrophysical correlation: “Some of these systems definitely demand further investigation but those already studied in detail turn out to have a natural astrophysical explanation too. It’s very likely that the remaining systems also fall into this category but of course it’s worth checking just in case!”

Obviously, the uncertainty of these results is quite high. Nonetheless, the results indicate that either humanity really is the only intelligent species in this part of the universe, or advanced civilizations are far more efficient in their use of energy than is reasonable to assume.

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Two more arrests for embezzlement at Vostochny

5:02 pm

The Russians today arrested two more individuals for the embezzlement of funds during the construction work at the new spaceport in Vostochny.

The Lyublino district court of Moscow has ruled to take into custody director of the VIP Stroi Engineering company Vadim Mitryakov and former head of the Nizhny Novgorod Volga-Vyatka construction company (VVSK) Yevgenia Degtyareva, suspected of embezzling 300 million rubles ($4.42 million) allocated for the construction of roads to the Vostochny cosmodrome, the court said on Monday. “The court granted the investigation’s request on the measure of restraint for Mitryakov and Degtyareva — arrest for 2 months, i.e. until November 7,” the court’s press service told TASS.

This puts five now under arrest in the case.

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New launch contracts for SpaceX and ILS

8:31 am

The competition heats up: Launch competitors SpaceX and ILS announced new contracts today for launching commercial satellites into orbit.

SpaceX announced two new contracts, one from the Spanish communications company Hispasat, who signed them up to use a Falcon 9, and a second from the Saudia Arabian communications company Arabsat for a Falcon Heavy launch.

ILS meanwhile got its own contract from Hispasat to use a Proton to put another Hispasat communcations satellite into orbit.

The two Hispasat contracts show the advantages of competition for satellite makers. They now have more than one company to choose from, and are spreading their business around to give them options while encouraging these companies to compete against each other by lowering prices.

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