Category: Behind The Black

Hubble spots most distance active comet yet

11:13 am

Comet C/2017 K2

Using the Hubble Space Telescope astronomers have imaged a comet that is sublimating material at a distance from the Sun farther than any previously known comet, out beyond Saturn.

“K2 is so far from the Sun and so cold, we know for sure that the activity — all the fuzzy stuff making it look like a comet — is not produced, as in other comets, by the evaporation of water ice,” said lead researcher David Jewitt of the University of California, Los Angeles. “Instead, we think the activity is due to the sublimation [a solid changing directly into a gas] of super-volatiles as K2 makes its maiden entry into the solar system’s planetary zone. That’s why it’s special. This comet is so far away and so incredibly cold that water ice there is frozen like a rock.”

Based on the Hubble observations of K2’s coma, Jewitt suggests that sunlight is heating frozen volatile gases – such as oxygen, nitrogen, carbon dioxide, and carbon monoxide – that coat the comet’s frigid surface. These icy volatiles lift off from the comet and release dust, forming the coma. Past studies of the composition of comets near the Sun have revealed the same mixture of volatile ices.

The significance here is that by studying the comet’s activity scientists will be able to identify some of these volatile gases, which in turn will tell them something about the make-up of the outermost fringes of the solar system.

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Status of Arecibo radio observatory

9:16 am

It appears that, while Puerto Rico itself suffered devastating damage from Hurricane Maria, the Arecibo Observatory came through relatively unscathed.

The surface of the dish was largely unscathed, and the observatory’s most vulnerable component, the instrument platform suspended high above the dish by cables strung from three towers, each more than 80 meters tall, was still in place and seemed undamaged, says Schmelz. She is based at the Columbia, Maryland, headquarters of one of Arecibo’s operators, the Universities Space Research Association, and spoke with staff in Puerto Rico who first used a ham radio and then a single working satellite phone. But the roofs on some observatory buildings were blown off, the sinkhole under the dish was flooded, and other equipment was damaged by rain and fallen trees. Most significantly, a large portion of a 29-meter-long antenna—the 430-megahertz line feed used for studying the upper atmosphere—appears to have broken off and fallen from the platform into the dish. Mathews estimates a bill of several million dollars to replace the line feed alone.

Because of the significant infrastructure damage across the island, there will be significant delays in getting any of this fixed. Since the telescope is already being considered for shut down due to budget issues, these delays could lead to that shut down.

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Chinese government orders shutdown of all North Korean businesses

8:39 am

The Chinese government has ordered that all businesses run by North Koreans, whether singly or in a joint partnership, must shut down within the next four months.

The order applies to all such businesses in China, as well as any Chinese/North Korean joint ventures abroad. It will exempt nonprofits and “noncommercial infrastructure projects,” whatever that is, and will also allow individual businesses to request a waiver.

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One last image from Rosetta

8:17 am

Rosetta's last image

Engineers reviewing the last bits of telemetry that was transmitted back to Earth by Rosetta just before it crashed on Comet 67P/C-G have discovered one last image of the comet’s surface.

That image is on the right. It is slightly blurred because of the limitations of Rosetta’s camera at this short range, and the incompleteness of the data received.

The image covers an area about a meter across, with a resolution of about two millimeters per pixel.

I imagine this surface is relatively soft, since the gravity holding the comet together is so slight. If you wanted to dig down, you would find it easy digging.

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NASA and Roscomos sign agreement to work together to build lunar orbiting station

3:04 pm

Extending the pork: NASA and Roscosmos have signed an agreement agreeing to work together in the construction of what NASA calls a deep space gateway, a space station orbiting the Moon.

The goal here is to garner political support for getting funding to fly a third SLS/Orion mission, which would be its second manned flight. It is also to establish some long term justification for SLS/Orion, which presently has no mission and will disappear after its first manned test flight, presently scheduled for 2022. That single test flight will have taken 18 years and more than 40 billion dollars to build, an absurd timeframe and cost for a single mission that does not bode well for future SLS/Orion missions.

The Russian perspective can be found here. They claim that the station would be finished by 2024-2026, an absurd prediction based on the expected SLS launch rate of one launch every one to two years. For Russia, the hope is that they can use this project to get U.S. money, just like the big American space companies like Lockheed Martin (Orion) and Boeing (SLS).

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Republican tax plan unveiled

11:03 am

As expected, the Republican leadership has unveiled a new tax proposal that would consolidate the number of tax brackets while increasing the rate of the lowest bracket and increasing the standard deduction.

I admit that I have grown very cynical about these proposals. They never end up simplifying anything. Instead, each time Congress has done this in the past three decades they have only made the tax code more complicated. I see no evidence so far that this Congress and this Republican leadership will do anything different.

Moreover, Congress and Trump continue to make little effort to rein in spending, so I expect the result here will also be a significant increase in the crushing federal debt.

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Gravitational waves from black hole collision detected

10:47 am

Three Earth gravitational wave observatories have detected the waves coming from the same collision of two black holes.

The collision was observed Aug. 14 at 10:30:43 a.m. Coordinated Universal Time (UTC) using the two National Science Foundation (NSF)-funded Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors located in Livingston, Louisiana, and Hanford, Washington, and the Virgo detector, funded by CNRS and INFN and located near Pisa, Italy.

The detection by the LIGO Scientific Collaboration (LSC) and the Virgo collaboration is the first confirmed gravitational wave signal recorded by the Virgo detector.

Based on the data obtained, they estimate that the two black holes 25 and 31 times the mass of the Sun and are about 1.8 billion light years away.

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Parts 2 and 3 of “A Niche in Time”

10:34 am

The second and third parts of Doug Messier’s series on the history of aviation and space are now available:

Part 2 describes how the Hindenberg crash ended the lighter-than-air airship industry, while Part 3 describes how the Columbia accident led to the end of the space shuttle. He then compares them both, noting their similarities.

Not surprising to me, the main common thread that sustained both of these failed concepts was the desire of a government to build and fly them, regardless of their cost and practicality. Messier’s comparison between airships and airplanes highlights this well. Airplanes were cost effective and could easily be made profitable. Airships were neither. They existed because Hitler wanted them.

The same can be said for the space shuttles, and for Constellation and SLS/Orion today.

Anyway, read both articles above. They are nicely written, very informative, and provide important lessons about history that we would be wise to educate ourselves about before we attempt to make our own history in the future.

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UN announces proposed Dream Chaser international mission

10:15 am

Capitalism in space: The Outer Space office of the United Nations has announced an opportunity for member nations to express their interest in doing a science mission using Sierra Nevada’s Dream Chaser reusable spaceship.

The UN announcement states that

The purpose of this Call for Interest (CFI) is to provide a summary of the proposed mission and to solicit information from Member States interested in providing experiments, payloads, or satellites that could be flown on this mission. The CFI also has the objective of gathering information on the interested countries so that UNOOSA may better understand the demand for this type of mission.

The actual call [pdf] roughly describes a mission lasting 2 to 3 weeks and carrying about 20 experiments. This call is designed to give them a better idea of what those experiments might be, what nations wish to participate, and where the funding for the mission might come from. The actual announcement to submit experiment proposals won’t come until March 2018.

Being a UN mission, it is not surprising that it wants to focus on a variety of leftwing “Sustainable Development Goals”:
» Read more

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Dark energy might not exist

6:22 pm

The uncertainty of science: A new model for the universe that omits dark energy produces a better fit to what is know than previous theories that included it.

The new theory, dubbed timescape cosmology, includes the known lumpiness of the universe, while the older traditional models that require dark energy do not.

Timescape cosmology has no dark energy. Instead, it includes variations in the effects of gravity caused by the lumpiness in the structure in the universe. Clocks carried by observers in galaxies differ from the clock that best describes average expansion once variations within the universe (known as “inhomogeneity” in the trade) becomes significant. Whether or not one infers accelerating expansion then depends crucially on the clock used. “Timescape cosmology gives a slightly better fit to the largest supernova data catalogue than Lambda Cold Dark Matter cosmology,” says Wiltshire.

He admits the statistical evidence is not yet strong enough to definitively rule in favour of one model over the other, and adds that future missions such as the European Space Agency’s Euclid spacecraft will have the power to distinguish between differing cosmology models.

Both models rely on a very weak data set, based on assumptions about Type 1a supernovae that are likely wrong. It is thus likely that neither explains anything, as neither really has a good picture of the actual universe.

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First meeting of National Space Council announced

6:14 pm

A Potemkin Village: The White House has announced the date of the first public meeting of the National Space Council, set for October 5 at the Air & Space Museum.

Today, Vice President Mike Pence announced the first meeting of the National Space Council is scheduled for October 5, 2017 at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. The meeting, titled “Leading the Next Frontier: An Event with the National Space Council,” will include testimonials from expert witnesses who represent the sectors of the space industry: Civil Space, Commercial Space, and National Security Space.

What this announcement tells me is that this council isn’t there to discuss and set space policy, but to sell that policy to the public. And right now, I am expecting that sales job will be trying to convince us that we must use SLS/Orion mission to build a new space station orbiting the Moon by 2023. They will use the council to pitch the idea, and then Trump will make the traditional Kennedy-like speech, with lots of astronauts standing behind him, committing this nation to putting a space station around the Moon by such-and-such a date. Whoopie!

Forgive me if I sound a bit cynical. I’ve seen this show many times before. For some reason, the opening act is great, but then it fades always away into nothingness before the second act begins.

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Rocket Lab preps for 2nd flight of Electron

6:06 pm

Capitalism in space: Smallsat rocket company Rocket Lab is preparing for the second test flight of its rocket Electron, now set for October.

The test flight will also carry four commercial nanosats.

Both Planet and Spire — two companies that operate small satellites in orbit — will have payloads on the Electron’s second test flight, dubbed “Still Testing.” The rocket will carry two of Planet’s Dove satellites, designed to image Earth, as well as two of Spire’s Lemur-2 satellites that track weather and ship traffic.

The company also states that if this second flight is successful, they might forego a third test flight and move directly to commercial operations.

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Senator Bob Corker (R-Tennessee) will not seek reelection

1:55 pm

Good riddance! Senator Bob Corker (R-Tennessee), a major player among the Republican leadership and the man who engineered the acceptance of the Iran deal, announced today that he would not seek reelection.

I had expected Corker to make his decision after the results of today’s election in Georgia. That he announced before those results suggests the polls there made it clear to him that a RINO like him was in big trouble and would have faced a tough primary election.

These events indicate to me once again that, except for the bankrupt big urban areas and the coasts, the country continues to shift to the right. Corker was going to face a strong conservative primary challenger, running against Corker’s moderate “let’s work with the leftist Democrats” stance. His decision today indicates that he did not think such a position was a winnable one any longer.

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Long March 5 failure to delay Chinese lunar probes and space station

12:46 pm

The July launch failure of China’s largest rocket, Long March 5, is going to cause delays to both its lunar and space station programs.

They have not yet finished their investigation into the failure, and are now admitting that the launch of Chang’e-5, a lunar sample return mission, will not occur this year as planned, and that the launch of their space station core module will be delayed into 2019.

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Republican leaders to introduce tax increase

9:33 am

Failure theater: The Republican leadership in Congress is about to introduce tax increase, increasing the tax rate for the lowest bracket from 10% to 12%, while making believe that it really is a tax cut.

The plan will also increase the tax deduction, which they will then claim means that the tax increase really doesn’t matter.

They really have an utter contempt for the people who voted for them, not unlike the utter contempt being shown right now by the NFL to its customer base. Well, if you spit on your supporters don’t expect them to support you much longer.

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Blue Origin inks deal with satellite company to use New Glenn

9:12 am

Capitalism in space: Blue Origin has signed a deal with the satellite company mu Space to use its as yet unbuilt New Glenn rocket to launch a satellite sometime in the next decade.

This isn’t really a contract, since I am sure that mu Space will have the option to switch to a different rocket. Nonetheless, it signals faith in Blue Origin. It also indicates that, though no price was mentioned, Blue Origin is probably providing the satellite company with a significant price break to encourage them to make the deal, thus demonstrating the growing competitiveness of today’s launch industry. This is also the third contract deal for New Glenn.

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UC-Berkeley’s chancellor orders removal of posters, starts investigation

8:24 am

Fascist Berkeley: Following the cancellation of “Free Speech Week” at the University of Berkeley, the university’s chancellor ordered the removal of posters detailing the terrorist connections of certain students and teachers, calling them “hate speech” and starting an investigation into the conservative organization that posted them.

The posters in question name Kumars Salehi, Judith Butler, and Hatem Bazian and nine other individuals as supporters of terrorism on the consciousness-raising posters that UC Berkeley Chancellor Carol Christ ordered torn down.

According to the Canary Mission website, Salehi is a graduate student in German literature and culture at Berkeley. Salehi supports the dissolution of the State of Israel and is a member of the terrorist front group Students for Justice in Palestine and the BDS movement. He agrees with the absurd claim of Columbia University professor Joseph Massad that “Zionism and white nationalist anti-Semitism have historically been allies.”

Butler is the Maxine Elliott Professor of Comparative Literature at Berkeley, a BDS movement leader, and a member of the anti-Israel Jewish Voices for Peace (JVP) advisory committee. Butler has charactered Muslim terrorist groups as legitimate political players, saying she sees “Hamas [and] Hezbollah as social movements that are progressive, that are on the Left, that are part of a global Left [that are] very important.”

Bazian co-founded Students for Justice in Palestine to wage a campus war against Israel on behalf of Hamas. Bazian is chairman of the board of the Hamas organization “American Muslims for Palestine,” and is on record calling for the destruction of the Jewish state and its Jews in so many words. The founding charter of Hamas, by the way, speaks of “the Nazism of the Jews” and asserts that “Israel will exist and will continue to exist until Islam will obliterate it, just as it obliterated others before it.” It claims that peace initiatives “are all contrary to the beliefs of the Islamic Resistance Movement”; that “there is no solution to the Palestinian problem except by Jihad”; and that “war for the sake of Allah” is a noble enterprise that requires the faithful to “assault and kill” on a massive scale. [emphasis mine]

You can’t support freedom of speech if you tear down posters and investigate the people who post them. Such actions are that of tyrants, and we now know that Chancellor Christ’s claims that she supported free speech were lies.

Note that the posters were put up as part of the “Free Speech Week” event that Milo Yiannopoulos attempt to put on there, which ended up getting cancelled. Note also that they were written and posted by the David Horowitz Freedom Center, a conservative organization focused on supporting freedom and opposing oppression.

Update: Leftist protesters at Berkeley this week also acted to block reporters from reporting on their protest.

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Sputnik for sale!

7:57 am

Capitalism in space: Sputnik’s engineering test replica is going up for auction, and you can buy it!

Like the Sputnik-1 that flew into orbit on October 4, 1957, the test replica is a polished aluminum sphere 23 in (58 cm) in diameter with four spring-mounted external whip antennas. It consists of an outer shell to protect the satellite against heat and an inner pressurized shell to protect the pre-solid state electronics made up of a simple radio transmitter and a 12-V battery. The replica includes a 57-in (1,448 mm) manganese brass stand and an anti-static o-ring. All together, satellite and stand weigh about 100 lb (45 kg) and stand 78 in (1,981 mm) tall.

The Sputnik was previously part of the collection of Heinz Miller of Austria and was originally built for electromagnetic compatibility and electromagnetic interference testing. Only three of the original Sputniks remain in private hands. Of the other two, one is outside Moscow at the Energia Corporate Museum, while the other is at the Museum of Flight in Seattle.

The asking price for the Sputnik is US$100,000 to US$150,000.

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The kittens of Saturn’s rings

11:16 am

The scientists who used Cassini to identify about 60 transient clumps in Saturn’s rings have dubbed them “kittens” and have been naming them appropriately.

Saturn’s kittens are a group of small clumps and baby moons, or moonlets, that occupy the planet’s F ring. Like the rest of Saturn’s rings, this thin outer ring is made up of countless particles that range in size. When enough of those particles bump into one another and stick together, they aggregate into larger clumps — and become eligible for a kitten name.

So far, the list of Saturn’s kitten names includes several classics, like Fluffy, Garfield, Socks and Whiskers. These are unofficial nicknames for more-complicated (and less adorable) official titles like “Alpha Leonis Rev 9” (aka, Mittens). The technical names for these features come from events called stellar occultations, during which Cassini was able to detect the little clumps. In a stellar occultation, a star passes behind Saturn’s rings from Cassini’s point of view.

Most of these clumps will likely never be found again, so their unofficial kitten names are essentially just for fun.

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