Year: 2017

Astronomers discover complex molecules in protostar accretion disk

10:18 am

Astronomers have discovered several complex molecules in the accretion disk surrounding a very young baby star about 1300 light years away in the constellation Orion.

The research team’s ALMA observations have clearly detected an atmosphere of complex organic molecules above and below the disk. These include methanol (CH3OH), deuterated methanol (CH2DOH), methanethiol (CH3SH), and formamide (NH2CHO). These molecules have been proposed to be the precursors for producing biomolecules such as amino acids and sugars. “They are likely formed on icy grains in the disk and then released into the gas phase because of heating from stellar radiation or some other means, such as shocks,” says co-author Zhi-Yun Li of the University of Virginia.

What is even most interesting about this discovery is that these complex molecules are not scattered throughout the disk, but are concentrated in regions above and below its central plane, what the astronomers are labeling “an atmosphere.” This suggests that differentiation — the same process that separates the heavier molecules from lighter ones both in centrifuges and in the cores of planets — occurs quickly in accretion disks as well.

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Lesley Gore – California Nights

6:01 pm

An evening pause: From a very amusing 1967 Batman television episode, with the evil arch villain Catwoman, played by Julie Newmar. Lesley Gore’s lip-syncing isn’t the best, but the overall silliness of the scene, as well and the entire show, makes it is worth watching. The song is nice too. Unfortunately, I can’t find the whole episode, but this search on youtube finds a host of scenes from that classic of campy 1960s television.

Hat tip Diane Zimmerman.

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Republican House restores spending in NASA budget

4:53 pm

The House committee marking up NASA’s budget has added about $800 million to the budget proposed by the Trump administration, restoring the proposed cuts in the SLS/Orion budget as well as in NASA’s education programs.

NASA’s exploration account receives the largest increase in the House bill: a $616 million increase over the request to $4.55 billion. The bill would fund the Orion spacecraft and Space Launch System at the same levels as in the 2017 omnibus bill, rather than the lower levels in the budget proposal. It increases funding for ground systems and exploration research and development above both the request and the 2017 omnibus bill.

The bill would also restore much of NASA’s education program, which the administration proposed closing in its 2018 budget request, offering $37.3 million in closeout costs. The bill offers $90 million for education, $10 million below the 2017 level. The bill specifically funds two programs in that office, Experimental Program to Stimulate Competitive Research (EPSCoR) and National Space Grant College and Fellowship Program, that would have been shut down in the budget request.

Plans to end those education programs faced bipartisan opposition when the CJS subcommittee held a hearing on NASA’s budget proposal June 8. “I’m concerned about, in your budget, your cuts to the Office of Education,” said Rep. Hal Rogers (R-Ky.), a former chairman of the House Appropriations Committee who is now a member of the CJS subcommittee. “I can’t understand why you would want to cut that.”

The budget also adds money to the planetary budget, but also micromanages NASA by ordering it to fly two missions to Europa.

What this budget tells me is that the Republicans in Congress have no idea why Trump was elected. The public likes space, but it does not like its tax dollars wasted, and the public who voted for Trump (and the Republicans) considers much of what the federal government does to be a big waste. They want that budget trimmed. The Trump budget didn’t gut NASA, but it did try to refocus its effort away from pork. These House changes reinstate much of that pork.

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CNN Lists Job Opening For Head Fiction Writer

12:10 pm

Link here. Key quote:

The network is reportedly looking for a seasoned author of thrilling fiction novels to fabricate news stories for its online and televised news coverage.

“Must have a penchant for weaving complex narratives and fabricating intricate storylines out of thin air for the sake of ratings. Experience in Cold War-era spy novels preferred, in the style of Tom Clancy, etc.,” the listing states. “Author will be responsible for making stuff up out of the blue to form the basis of 5-6 news stories per day. Full salary & benefits.”

The listing also states that “no journalism background is required.”

It seems to me that this listing is the most honest I’ve ever seen. Though I’m not sure what difference it makes whether any applicants have a modern “journalism background” or not. Considering what they teach students about journalism in today’s modern colleges, there really isn’t much difference between journalism and fiction anyway.

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China cuts off oil to North Korea

12:03 pm

It’s about time. China’s national oil company has suspended all oil sales to North Korea because of lack of payment.

The reason North Korea doesn’t have the money to buy oil is largely because it hasn’t been able to sell any coal to China. And the reasons for both is likely China’s increasing desire to rein in North Korea’s missile and nuclear arms programs.

Without oil or coal, North Korea’s leadership will find itself hard-pressed to survive.

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Public school teachers now required to do student mental health assessments

11:19 am

What could possibly go wrong? A federal law passed in 2015 and signed by President Obama now requires public school teachers to do mental health assessments of their elementary school students, without obtaining parental permission.

You read that right: if you live in an ESSA state, your child’s mental health will be assessed by a non-medical professional in a non-medical context. The paperwork will not be protected by HIPAA laws, which means that the school district can share a teacher’s assessment of your child’s mental health with literally anyone. Parents are not asked for permission before the DESSA is administered, nor do they have any say over where the records go once they are obtained.

Worse, the assessments require teachers to fill out a form with 72 questions on each student, a time-consuming task that will likely interfere with unimportant things like teaching.

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A river canyon on Mars

11:02 am

A river on Mars

Cool image time! The image on the right, reduced in resolution significantly to show here, was taken by the Themis camera on Mars Odyssey, and shows an unnamed canyon on Mars. Be sure to click on the image to see the full resolution version.

This canyon of course no longer has anything flowing in it. Moreover, it is not clear whether this was formed by water or lava. Unfortunately, the image is part of a series of “Art images” from Mars Odyssey, where they pick an image and suggest it looks like something else. In this case, they are claiming this looks like a “snake, slithering down the image.” Cute, but not very helpful. And unfortunately, they don’t add any further details at all about the image or its location. The context image suggests this canyon is next to a volcano.

After doing further research at the Themis image site, I was able to locate this image on Mars (using latitude 32.0515 and longitude 152.236 given at the link) and look at the images surrounding this one. Further research identified the volcano as Hecates Tholus in the Elyesium Plantia region to the west of Mars’s giant volcanoes.

Looking at all the nearby Mars Odyssey images, it appears that there are a lot of flows like this in this area, and all of them appear to be lava flows, with this one being the largest. A close look at the area just to the south of where the deep canyon opens out shows that the small surface flow draining into the canyon also appears to sit on much larger surface flows (at least two) that left the surface higher than the surrounding terrain.

Elyesium Plantia itself is a plateau, somewhat close to the border between Mars’s southern highlands and the northern plains where some scientists think an ocean might have once existed. Thus, it makes sense that the canyon drains north, as it is following the dip down to those northern low plains.

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SpaceX expanding facilities in Florida for refurbishing used first stages

10:01 am

Capitalism in space: SpaceX is proposing to expand its facilities at Port Canaveral for refurbishing used first stages.

It appears they need the approval for the work from the port’s Board of Commissioners, though I suspect this board will rubber stamp its approval as quickly as it can.

One tidbit from the story. SpaceX has so far recovered 13 first stages and flown two again. One (the first) has been put on display, which leaves 10 available for reflight. They plan to use two on the first Falcon Heavy launch. The remaining 8 are likely for sale (maybe 10 if the two reflown fly a third time), which explains the negotiations going on with Iridium and others.

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Uranus’s magnetic field switches on and off daily

9:54 am

Using data from the Voyager 2 flyby of Uranus in 1986, scientists now think that the gas giant’s magnetic field switches on and off each day as the planet rotates.

Uranus’s magnetosphere, in contrast [to Earth], exhibits precise regularity in its mode changes. This, say the researchers, is because it lies at an angle of roughly 60 degrees to the planet’s spin axis, causing its interaction with incoming solar winds to vary dramatically during the 17 hours it takes for a full rotation. “Uranus is a geometric nightmare,” says Paty.

“The magnetic field tumbles very fast, like a child cartwheeling down a hill head over heels. When the magnetised solar wind meets this tumbling field in the right way, it can reconnect and Uranus’s magnetosphere goes from open to closed to open on a daily basis.”

The researchers suggest the robust and regular changes to the magnetosphere may mean that the icy planet has spectacular auroras across its breadth every day.

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New company formed to service satellites in-orbit

9:50 am

Capitalism in space: MDA and SSL Loral today announced the formation of a new company, Space Infrastructure Services (SIS), that will service satellites already in orbit.

This partnership is based on the engineering being developed by SSL Loral under a DARPA research project.

The most important part of the announcement however is that SIS has also signed up its first customer.

The company also announced that SES, a world leading satellite-enabled solutions provider, with more than 50 GEO satellites and 12 MEO satellites on orbit, has entered into an agreement for an initial life extension mission with options for further missions. Under this agreement, SES will be the first commercial customer to benefit from satellite refueling that can be called up as needed with minimal disruption to spacecraft operation.

As it did with SpaceX, SES is aggressively supporting this new technology that will revolutionize space operations. Here the technology will allow them to repair their satellites, thus saving them the cost of replacing them with new satellites.

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First test launches of commercial manned vehicles upcoming

9:35 am

The first unmanned test flights of the manned capsules being built by SpaceX and Boeing are moving forward and appear to be on schedule.

Currently, SpaceX is on track to be the first to perform their uncrewed flight, known as SpX Demo-1, with Dr. Donald McErlean reporting to the ASAP that the flight continues to target a launch later this year. Currently, both NASA and SpaceX hold that SpX Demo-1 will fly by the end of the year – though L2 level KSC scheduling claims the mission has potentially slipped to March 2018.

Regardless, SpX Demo-1 will be followed – under the current plan – by Boeing’s uncrewed OFT (Orbital Flight Test) in mid-2018.

The article is worth a careful read, as it describes in detail the political and bureaucratic maneuverings that are taking place to get the NASA bureaucracy to accept the work being done by these two private companies. Make sure especially that you read the section about NASA’s desire that the vehicles meet an imaginary safety standard where they will only lose a crew once every 270 flights. The NASA bureaucracy has claimed for the last few years that neither spacecraft is meeting this requirement, but according to this article it appears they are finally also admitting that the requirement has really little basis in reality.

According to the ASAP [Aerospace Safety Advisory Panel] meeting minutes, Dr. McErlean said that “While these LOC [Loss of Crew] numbers were known to be challenging, and both providers have been working toward meeting the challenge, it is conceivable that in both cases the number may not be met.”

However, Dr. McErlean cautioned the ASAP and NASA about rushing to judgement on the current and whatever the final LOC number for each vehicle is. “The ASAP is on record agreeing with the Program that one must be judicious in how one applies these statistical estimates. In the case of LOC, the numbers themselves depend very heavily on the orbital debris model used to develop the risk to the system [as] orbital debris is a driving factor in determining the potential for LOC. The orbital debris models have been used and validated to some degree, but they are not perfect. One must be wary of being too pernicious in the application of a specific number and must look at whether the providers have expended the necessary efforts and engineering activity to make the systems as safe as they can and still perform the mission.”

To that last point, Dr. McErlean reported that both providers indeed “expended the necessary efforts and engineering activity to make the systems as safe as they can.” Importantly, too, Dr. McErlean noted that there was no evidence that spending more money on closing the LOC gap for both providers “could [make] their systems considerably safer.”

The ASAP at large concurred with this finding and noted their pleasure at the progress made in closing the LOC gap for both Dragon and Starliner. [emphasis mine]

In other words, NASA’s safety panel is eventually going to sign off, no matter what. Note also that the GAO’s earlier complaints about Boeing’s parachute testing program have now apparently vanished.

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