Hubble photographs the break-up of an asteroid.

Hubble photographs the break-up of an asteroid.

The ongoing discovery of more fragments makes it unlikely that the asteroid is disintegrating due to a collision with another asteroid, which would be instantaneous and violent in comparison to what has been observed. Some of the debris from such a high-velocity smash-up would also be expected to travel much faster than has been observed.

It is also unlikely that the asteroid is breaking apart due to the pressure of interior ices warming and vaporising. The object is too cold for ices to significantly sublimate, and it has presumably maintained its nearly 480-million-kilometre distance from the Sun for much of the age of the Solar System.

This leaves a scenario in which the asteroid is disintegrating due to a subtle effect of sunlight that causes the rotation rate to slowly increase over time. Eventually, its component pieces gently pull apart due to centrifugal force. The possibility of disruption by this phenomenon — known as the YORP effect — has been discussed by scientists for several years but, so far, never reliably observed.

In testimony to Congress Wednesday, Elon Musk described how allowing SpaceX to compete as a military launch provider would significantly lower costs.

The competition heats up: In testimony to Congress Wednesday, Elon Musk described how allowing SpaceX to compete as a military launch provider would significantly lower costs.

[Senator Richard Shelby (R-Alabama)] said the Air Force EELV contracts require compliance with complex oversight and accounting practices that add costs to the program. As a result, he suggested comparing the cost of a SpaceX Falcon 9 and a ULA Atlas or Delta was comparing apples and oranges.

Musk agreed “there is additional cost for U.S. government missions due to the mission assurance process.” And he said SpaceX’s costs for launching a military mission would be 50 percent higher than for a purely commercial launch. Even so, he said, SpaceX could provide a Falcon 9 rocket for around $90 million as opposed to nearly $400 million for a ULA launcher. “Even when you add the Air Force overhead, there’s still a huge difference,” he said. [emphasis mine]

The only reason that Congress is against eliminating the military launch monopoly given to ULA and allowing SpaceX to compete is because the monopoly feeds a lot of pork to the districts of certain but powerful legislators like Shelby.

ULA and Shelby are losing the argument however. The cost differences are too high, and SpaceX has proven that it can do the job efficiently and effectively. Eventually the monopoly will die, and the sooner the better.

A look at the President’s overall budget for science, which finds spending levels remain flat.

A look at the President’s overall budget for science, which finds spending levels remain flat.

What makes this story significant is that the budget is really flat. Some agencies will get more money, others less, with the total spent about the same as the year before. They are not discussing, as had been typical in the past, the rate of increase in spending, where a reduction in that rate would be reported falsely as a “cut.”

A 100-foot diameter newly discovered asteroid will zip past the Earth inside the Moon’s orbit today at 4:07 pm Eastern.

Chicken Little report: A 100-foot diameter newly discovered asteroid will zip past the Earth inside the Moon’s orbit today at 4:07 pm Eastern.

The asteroid, dubbed 2014 DX 110, is about 100 feet in diameter and is set to come within 216,000 miles of Earth — a close shave by astronomical standards, considering our Moon orbits the Earth at a distance of about 238,900 miles.

While an object that size may not seem imposing, if it were to strike the Earth, it would release a devastating amount of energy greater than a nuclear weapon. The infamous asteroid that exploded over Tunguska, Siberia, on June 30, 1908, has been estimated to be about 30 meters to 60 meters — 100 feet to 200 feet — in diameter.

While it is true that the impact would be significant, this news report does the typical fear-mongering to make the story seem interesting. The problem, however, is that the detection of these fly-bys is becoming more frequent. The number of asteroids isn’t changing, but our ability to spot them is, and with more frequent discoveries comes more frequent news stories like this. I fear that such stories — fueled by press releases from various astronomy organizations — are going to begin to sound like a kid “crying wolf” to the general public. The threat from an asteroid impact is real, even if most asteroids miss us. Desensitizing the public to the threat is not a good thing.

The guacamole at the fast food chain of Chipotle is going to be stricken from the menu because of “global warming.”

The guacamole at the fast food chain of Chipotle is going to be stricken from the menu because of “global warming.”

The Mexican fast food chain announced in recent Securities and Exchange Commission filings it could temporarily suspend sales of guacamole and some salsas due to an increase in food costs. Those increases are being caused by global warming, the Denver-based chain said. “Increasing weather volatility or other long-term changes in global weather patterns, including any changes associated with global climate change, could have a significant impact on the price or availability of some of our ingredients,” Chipotle officials said. Avocados and other items used to make Chipotle’s guacamole are the ingredients on the chopping block. [emphasis mine]

Is there nothing global warming can’t do?

Considering that there is presently zero evidence of any increase in “weather volatality”, nor is there any evidence that global warming can even cause this increased “weather volatility,” this announcement is garbage. The company wants to save money, and it is using the bugaboo of global warming to justify it.

The Obama administration released its 2015 proposed federal budget today, including its proposals for NASA.

The Obama administration released its 2015 proposed federal budget today, including its budget proposal for NASA.

The spending plan supports the Obama administration’s decision to extend U.S. operations of the International Space Station to 2024 with about $3 billion, funds NASA’s Space Launch System and Orion crew capsule with nearly $2.8 billion, and requests $848 million for development of commercial spacecraft to transport astronauts to and from low Earth orbit and end U.S. reliance on Russian Soyuz vehicles.

The budget proposal of $17.5 billion is essential flat, with a 1 percent cut from last year. It also includes proposals for several Earth science missions as well as a mission to Europa. In addition, it grounds the SOFIA airborne telescope, which has turned out to be as expensive to operate as Hubble while being far less productive.

The $848 for the commercial program is approximately the same number the Obama administration has requested every year. Congress has routinely cut this number, but has cut it less each year as time has passed. I suspect that they will cut even less this year, considering the tensions with Russia right now over the Ukraine. We need our own vehicles to ferry astronauts into space, and commercial space is right now the only way it is going to get done.

China finally reveals Yutu’s problem: the failure of a control circuit prevents it from storing its solar panels during lunar night.

China finally reveals Yutu’s problem: the failure of a control circuit prevents it from storing its solar panels during lunar night.

A functioning control circuit is required to lower the rovers mast and protect the delicate components and instruments mounted on the mast from directly suffering from the extremely harsh cold of the Moon’s recurring night time periods. “Normal dormancy needs Yutu to fold its mast and solar panels,” said Ye. The high gain communications antenna and the imaging cameras are [also] attached to the mast. They must be folded down into a warmed electronics box to shield them from the damaging effects of the Moon’s nightfall when temperatures plunge dramatically to below minus 180 Celsius, or minus 292 degrees Fahrenheit.

“What happens if Russia refuses to fly U.S. astronauts?”

“What happens if Russia refuses to fly U.S. astronauts?”

The problem: the situation in the Ukraine. If tension between the U.S. and Russia worsens then Russia might suspend carrying American astronauts to and from ISS.

The fault here belongs with Congress and George Bush, who decided in the 2000s to let the shuttle retire before its replacement was ready. In addition we can blame Congress in the 2010s for forcing NASA to spend billions on the unaffordable Space Launch System rather than focus on getting humans into space cheaply and quickly.

A retired NASA manager is suing the Discovery Channel for its false portrayal of his action in connection with the Challenger shuttle accident.

Fake but accurate: A retired NASA manager is suing the Discovery Channel for its false portrayal of him in a movie about the Challenger shuttle accident.

The suit says that in the movie’s crucial scene Lovingood is shown testifying falsely that the odds of a shuttle failure were much higher than other NASA engineers calculated. … “The clear statement and depiction was that Lovingood lied about the probability of total failure being 1 in 100,000 when NASA’s own engineers said it was 1 in 200,” the lawsuit says. “This movie scene never took place in real life at any hearing. (Lovingood) was never asked to give any testimony as depicted and he did not give testimony to the question shown in the movie in this made up scene.”

“It makes it look like (NASA leadership) ignored a highly risky situation” in deciding to launch Challenger that day, Lovingood’s attorney Steven Heninger of Birmingham said Friday. Heninger said the movie was the network’s “first attempt at a scripted program … and they took shortcuts because they were writing for drama.” The testimony in the movie was not in the investigation commission’s records or Feynman’s book “What Do You Care What Other People Think?,” both of which were sources for the film, the suit claims.

Though NASA management did consistently claim the shuttle was safer than it actually was, to falsely portray this specific individual as the person who said those lies when he did not is without doubt slander. I hope he wins big.

This is, by the way, a nice example of typical media arrogance. If you are going to fictionalize real events for dramatic purposes, you don’t use the names of real people and put words in their mouth when you do so. It leaves you very vulnerable legally to exactly this kind of lawsuit. That the Discovery Channel did so is good evidence they think they are above the law and do not have to care if they destroy people’s lives.

Returning the Falcon 9 first stage safely: More details about the next attempt during the next Dragon launch to ISS on March 16.

Returning the Falcon 9 first stage safely: More details about the next attempt during the next Dragon launch to ISS on March 16.

Not only will this test do more engine burns, they will attempt the first deployment of the stage’s landing legs. The article also gives more details about the last launch test, as well as the Grasshopper tests.

Posted from Tucson, Arizona, at last home!

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