Tag: spaceflight

Balanced rock on Comet 67P/C-G

9:55 am

balanced rock on Comet 67P/C-G

Cool image time! Rosetta’s high resolution camera has discovered a group of balancing rocks on the surface of Comet 67P/C-G.

The image on the right, cropped and brightened by me, shows the most dramatic of these rocks. The scientists are as yet uncertain on how these rocks got to where they are.

“How this apparent balancing rock on Comet 67P/C-G was formed is not clear at this point,” says OSIRIS Principal Investigator Holger Sierks from the Max Planck Institute for Solar System Research (MPS) in Germany. One possibility is that transport processes related to cometary activity played a role, causing such boulders to move from their original site and reach a new location.

It is also possible that the rocks were sitting on a base of ice that simply evaporated away over time.

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House Science Committee approves changes to space law

9:37 am

In a series of party line votes, the House Science Committee has approved a number of changes to the laws that govern the private commercial space industry.

Almost all of the changes were advocated by the industry itself, so in general they move to ease the regulatory and liability burdens that has been hampering the industry since the 2004 revisions to space law. While it is very unlikely commercial space can ever get free of strong federal regulation, these changes indicate that they can eventually get some of the worst regulations eased.

I should note also that, as expected, the Democrats opposed any easing of federal power. To them, all things must be controlled by the government, and to ease any regulations is to commit the most horrific of crimes. Note also that the Democratic lead in this opposition came mostly from Congresswoman Donna Edwards (D-Maryland), who has announced her intention to run for the Barbara Mikulski’s senate seat. This mark-up hearing thus gives us an idea of the future impact of Edwards should she win.

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Arianespace admits it is in a head-to-head competition with SpaceX

9:21 am

In testimony at a hearing in the French parliament the head of Arianespace admitted that the company has been in a head-to-head competition with SpaceX for the past two years, with SpaceX grabbing half the business.

He also claimed that they think they will be able to compete with SpaceX, even if it succeeds in recovering and reusing its first stage.

Israel said Arianespace fully expects SpaceX to succeed in its attempt to recover its Falcon 9 first stage.

But that’s just the start of the challenge, he said. It remains unknown what the refurbishment costs will be compared to the cost of churning out a fresh stage from an existing production line. He said it is also unclear whether commercial fleet operators will immediately accept placing $200 million telecommunications satellites on a rocket with a refurbished stage.

Finally, he said, flying a reusable stage means sacrificing first-stage performance so that enough energy is available to power it back to its recovery point. That power is thus unavailable for the mission, which is one reason why Hawthorne, California-based SpaceX thus far has attempted to recover its stages only on low-orbit missions, not for missions to geostationary transfer orbit, where most commercial satellites operate.

All true, but if Arianespace sits on its hands because of these facts it will eventually lose. It needs to rise to the challenge that SpaceX poses, not poo-poo the challenge.

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Sarah Brightman pulls out of her flight to ISS later this year

9:08 am

Citing family issues, Sarah Brightman has suddenly canceled her plans to fly to ISS later this year as a space tourist.

All the press announcements of this decision emphasize that she was doing quite well in the training program, but one wonders. There had been rumors of being replaced in recent weeks, and the “family issues” cited in today’s announcement could be a cover for anything.

Either way, this is unfortunate, because her flight would have been quite entertaining and would have done a great deal to promote the space tourism industry.

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What caused the failed separation of the Soyuz and Progress?

8:59 am

A good translation of this week’s press release from the investigation into the April 28 Progress failure indicates that the failure occurred because of an abnormal separation of the freighter from the upper stage.

After reviewing all the materials, members of the State Commission came to a preliminary conclusion that a version of the abnormal separation had been objectively confirmed, which includes two subsequent events related to the depressurization (disintegration after the cutoff of the third-stage engine) first of the oxidizer tank and then of the fuel tank, Roskosmos said.

In other words, the separation was so abnormal it put both the freighter and the upper stages in the wrong orbits, with the Progress tumbling and damaged, and with the upper stage almost immediately disintegrating.

They are now studying the data to try to figure out what caused the bad separation so they can inspect other Soyuz upper stages for the same problem and fix them before launch.

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New Horizons spots all of Pluto’s 5 known moons

7:46 am

New Horizons has now been able to image all of Pluto’s known moons.

Pluto’s five known satellites are Charon, Hydra, Nix, Kerberos and Styx. At 648 miles (1,043 km) in diameter, Charon is nearly half as wide as Pluto itself, but the other four moons are minuscule. Kerberos and Styx, for example, are thought to be just 4 to 13 miles (7 to 21 km) and 6 to 20 miles (10 to 32 km) wide, respectively.

That the spacecraft has been able to spot them all this soon bodes well for what it will see when if flies past Pluto in July.

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Russians confirm flip of Progress and Soyuz launches

4:54 pm

It’s official: The launch of the next crew to ISS will be delayed until late July to allow both a Progress freighter to launch first as well as give investigators more time to figure out what went wrong with the Soyuz upper stage during last month’s Progress launch.

In addition, the crew that had been slated to return to Earth this week will remain on board for another month to reduce the amount of time the station is manned with only 3 astronauts.

It appears that investigation is zeroing in on the upper stage of the Soyuz rocket, whose tanks apparently depressurized prematurely, causing the freighter to separate early and end up in an incorrect orbit.

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Construction at SpaceX’s new spaceport about to begin

9:23 am

The competition heats up: SpaceX has begun prepping the construction sites at its private spaceport in Brownsville, Texas.

The county has begun work on a road to where the spaceport command center will be, and SpaceX has established its construction headquarters in a double-wide trailer there. It is expected that actual construction of the command center will begin in August, with the launchpad construction to follow.

The expected cost for building the entire spaceport: $100 million. Compare that to the billions the Russians are spending for Vostochny, or the billions that NASA spends on comparable facilities.

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Sunset on Mars

9:03 am

sunset on Mars

Cool image time! The image above is not a sunset over the Blue Ridge Mountains of Tennessee. It is a beautiful blue sunset on Mars, taken by Curiosity from Gale Crater.

The image is the first sunset imaged by Curiosity in color, and is calibrated to match what the human eye would see.

Meanwhile, the rover’s journey continues, with a slight detour to check out an interesting hillside.

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New images of Dawn’s double bright spot

8:42 am

The double spot on Ceres

Cool image time! Dawn has released a new animation made from images taken in early May, showing more details of the dwarf planet’s double bright spot.

As they note at the link, the double spot is now “revealed to be composed of many smaller spots.” As they also add, “Their exact nature remains unknown.”

Dawn’s engineers are now beginning to ease the spacecraft down to its survey orbit, about 2,700 miles above the surface.

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XCOR progress report in construction of Lynx

9:00 am

The competition heats up: In a press release today XCOR announced new progress in the assembly of its Lynx suborbital space plane.

They revealed that they have “bonded the XCOR Lynx Mark I strakes to the Lynx spacecraft fuselage.”

To be honest, my impression of the work at XCOR from the photo at the link is that of one or two guys working in their spare time in their garage on restoring a classic car. Though I wish them well, the progress seems very slow, and piecemeal. In fact, it reminds me much of Richard Branson’s many false promises at Virgin Galactic. For example, back in 2012 XCOR announced a test flight schedule for 2013. None of those flights ever happened. Then in 2014 they said they hoped to begin flight tests before the end of that year. Again, nothing happened.

At least with this most recent release they aren’t saying when they plan to fly, since from the picture it appears they are quite a long ways from doing so. It is far better to make real promises that false ones, and XCOR might have learned that lesson watching the public relations problems Richard Branson has had in recent years.

Even so, I have been consistently very skeptical of this project. In fact, back in October 2013, in describing the effort of Blue Origin in the suborbital tourism trade, I predicted the following:

That the present ship [Blue Origin’s New Shepard] is being designed for suborbital tourist flights makes it a direct competitor of Virgin Galactic and XCOR. And considering the problems that Virgin Galactic has with SpaceShipTwo [written one year before its crash], and that XCOR doesn’t have the big bucks of Bezos, Blue Origin might actually be in the lead in the race to put the first tourists in space.

It appears now that this prediction was right on the money.

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Russian sources confirm their plan to flip launches to ISS

8:31 am

Though not yet officially decided, managers in the Russian space agency are definitely considering switching the launch dates of the next Soyuz and Progress missions to ISS, so that the unmanned cargo flight flies first.

Both spacecraft use the Soyuz rocket, and it now appears that the cause of last week’s Progress failure was a problem in the Soyuz third stage. They want to check out all Soyuz third stages before they put any humans on one. Switching the flights gives them time to do it. It also gets needed cargo to ISS sooner.

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Progress failure causes delay in next manned mission to ISS

5:22 pm

Russian sources suggest that they will postpone the next manned mission to ISS from May 26 to June 11 as they investigate the failure of the Progress freighter last week.

This article also suggests that the Russians might flip the next Progress and Soyuz flights to have the Progress go first. (This schedule change is something I suggested might happen last week, right after the launch failure.)

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The plans for the first Arab probe to Mars revealed

10:17 am

The competition heats up: The United Arab Emirates (UAE) on Thursday unveiled its plans for its first unmanned mission to Mars, dubbed al-Amal (“Hope”).

They hope to launch by 2020.

Forgive me if I am skeptical. Unlike India, which just succeeded in doing this, the UAE has no history or background in space exploration. India has been building satellites for decades. It has its own rockets. It had already launched a successful mission to the Moon. The UAE has done none of this yet. They are starting from ground zero.

Then again, one has to start somewhere.

This UAE effort illustrates again what I call the new colonial movement, where nations across the globe are increasingly pushing to participate in the exploration of space, because they realize that if they don’t, they will get left behind by their neighbors. Whether or not UAE succeeds, their decision to enter the competition proves the competition exists, and such a competition can only add energy to the effort to colonize the solar system.

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A second experiment on the next X-37B flight revealed

5:28 pm

NASA has outlined the materials research it will be conducting on the next X-37B flight, scheduled to launch on May 20.

Known as the Materials Exposure and Technology Innovation in Space, or METIS, the investigation on the X-37B will expose nearly 100 different materials samples to the space environment for more than 200 days, NASA says. METIS is building upon data obtained by several missions of the Materials on International Space Station Experiment (MISSE), which flew more than 4,000 samples in space from 2001 to 2013. For both MISSE and METIS, small samples the size of quarters are used. METIS will fly a variety of materials including polymers, composites and coatings.

Not only does this information, plus earlier information about an Air Force ion engine thruster experiment, probably describe a great deal of what the X-37B is carrying, it also tells us the probable duration of the flight.

I have no doubt there are other classified Air Force experiments on board, but like these, they are likely to be test articles, since the X-37B provides the perfect testbed for exposing new technology to space to see how it fares.

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Dragon launchpad abort test a success

8:27 am

The competition heats up: SpaceX’s first abort test of its Dragon capsule was completed successfully this morning.

The test not only demonstrated the capsule’s ability to escape the launchpad and land safely in the ocean nearby, it proved that its SuperDraco thrusters have the power to lift the spacecraft off the pad, which also means they have the power to lower the capsule to a soft landing on land.

Video embedded below.

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A review of what little we know of Pluto prior to New Horizons’ arrival

9:13 am

The principle investigator of the New Horizons mission to Pluto gives us an overview of what is known, and what we might find, when the spacecraft does its fly-by on July 14.

Pluto has very distinct surface markings, including apparent polar caps, and it has an atmosphere (mostly nitrogen). We know that Pluto’s interior is primarily made of rock — about 70% by mass. Also, Pluto-Charon constitute a true binary planet, with a barycenter (center of mass) situated in the open space between them. We know Charon is a “rising star” among the solar system’s icy bodies, with evidence for recently created surface ices, possible internal activity (hinted at by the spectroscopic discovery of ammonium hydrates a few years ago), and some likelihood of an atmosphere itself — perhaps gas that was siphoned off Pluto! As for the small satellites — Styx, Nix, Kerberos, and Hydra — we know very little about them beyond their orbits and crude colors. Soon all six of those points of light, planet and moons, will be real worlds thanks to NASA’s New Horizons.

He also admits that trying to guess what we might find is quite hazardous, and likely will end up wrong.

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An update on Sarah Brightman’s astronaut training

9:30 am

The competition heats up: New detailed photos of Sarah Brightman’s training for her September tourist trip to ISS have been released.

The photos appear to dispel the rumors that Brightman might be replaced with her backup tourist for the flight to ISS.

Some might consider this flight nothing more than a publicity stunt. While it surely is that, for Brightman it also is a dream come true. And the publicity will not simply be good for her career, it will do wonders to sell the idea of space tourism and space exploration.

In fact, there is never really any downside to freedom and allowing people to follow their dreams, and this tourist flight to ISS will prove it.

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Furniture for space!

9:31 am

Students at Rice University have built a chair and table expressly designed for use in a low gravity environment like the Moon or Mars.

The students interviewed astronauts to get an idea of what was needed, and did the design under NASA supervision. Their design is clever in that it can be packed easily, but I still wonder about the weight of transport. I don’t see the first explorers to Mars being able to afford bringing their furniture with them. I expect they will instead figure out ways to improvise chairs and tables from the materials on hand.

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New Shepard makes its first test flight

12:23 am

New Shepard launch

The competition heats up: Blue Origin completed on Wednesday its first test flight of its reusable suborbital spacecraft, New Shepard.

After reaching an altitude of 307,000 feet, or 58 miles, the capsule successfully separated from its first stage, what they call the propulsion module, and safely parachuted back to Earth. The first stage, designed to also be recoverable, was not recovered successfully. According to Jeff Bezos’s explanation, they “lost pressure in our hydraulic system” and that they were trying to land it vertically, like SpaceX’s Falcon 9 first stage.

The cropped image on the right of the full resolution image, gives us a close-up of the capsule and propulsion module. The small fins on the propulsion module suggest the capability for a vertical landing, but it is unclear from the image whether the module has legs, though other images and videos strongly suggest there are legs on this module.

The flight itself, getting above 50 miles, reached space according to most definitions. In fact, Blue Origin with this flight has accomplished what Virgin Galactic has been promising to do for more than a decade, a suborbital test flight of its spacecraft. Blue Origin’s flight was unmanned, but it demonstrated that their design works. They will of course have to re-fly the capsule as well as land that first stage successfully to prove the design’s re-usability, but this flight shows that they are off to a very good start. And their webpage clearly shows that they are almost ready to start selling tickets for suborbital flights.

The most significant success of this launch, however, is the performance of the BE-3 rocket engine. Blue Origin has convinced ULA to hire it to build the engines for its new Vulcan rocket. This success justifies that decision.

I have embedded their videos of the full flight below the fold.
» Read more

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Progress freighter declared lost

9:16 am

The Russians have declared lost the Progress freighter that had been launched to ISS yesterday.

They never could regain control of the craft, plus it was in an incorrect orbit. Moreover, the U.S. Air Force has detected debris nearby, suggesting a significant failure of some kind.

The Russians are now considering delaying the next manned launch, scheduled for May 26, while they investigate this failure. Both Soyuz and Progress use some of the same systems, including the radar system that failed on Progress, and they want to make sure the problem won’t pop up on the manned mission.

At the same time, they are also considering advancing the launch date of the next Progress to ISS from August 6.

Based on these reports, I think they might swap the launch dates for the two flights. A Dragon is scheduled to go to ISS in between these missions, though that schedule could be changed as well to accommodate the Russian plans.

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Rosetta team releases almost 1300 images of Comet 67P/C-G

9:01 am

The science team for Rosetta’s navigation camera have released to the public 1297 images taken of Comet 67P/C-G as the spacecraft began its approach on August 1, 2014 through September 23, 2014.

The release also included a video assembled from these images, showing the comet nucleus as Rosetta approached from August 1 to August 22. I have embedded that video below. As you watch, you will think, “How does this thing stay together?” Though the video shows the nucleus’ rotation at a highly accelerated rate, which exaggerates the stresses on the object, the question is a good one, and in fact, is actually predicting the future. Eventually, this nucleus will break up.

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