The sky is not failing: New radar data of Apophis now indicates that its chances of the asteroid hitting the Earth in 2036 is zero.
This data doesn’t eliminate the chance of a collision, only postpones it much farther into the future.
An evening pause:
The competition heats up: An official of SpaceX announced today that the company plans on its first manned launch by 2015, and that the astronauts will be its employees, not NASA’s.
Back when the shuttle program was still alive and NASA astronauts could have applied political pressure to keep it running, some said they should, if only to save their jobs. They did not, and instead toed the party line and supported the shuttle’s retirement even though no replacement was even close to being operational.
How’s that working out for you, guys, eh?
The truth is that there is no justification any longer for the astronaut corp at NASA. They have no vehicle, and any future space vehicle is going to be built and operated by others who will chose their own pilots.
More Apophis news: New data from the Herschel Space Telescope suggests that the asteroid is bigger and less reflective than previous believed.
Instead of 900 feet across, they now estimate it has a diameter of about 1070 feet. And knowing that the asteroid has a lower albedo means that astronomers will be better able to gauge the effect of solar radiation on Apophis’s orbit.
Pigs fly! A new National Research Council report honestly admits the possibility that the Sun might be an important factor in climate change.
The article, from NASA, itself is a remarkably fair assessment of the field’s state of knowledge (which in truth is quite spotty since we really do not yet understand what is going on with the climate). This, as far as I can remember, is the first time in years, since the early 1990s before the global warming advocates took over the climate field and shut down debate, that an official article from a government organization like NASA has been so open about these issues and not toed the politically correct line that “fossil fuels and carbon dioxide are causing global warming and don’t you dare say anything different!”
An evening pause: I especially like the banjo player, as it almost appears like magic how he produces the sound from his instrument.
Tracking the orbit of the exoplanet in Fomalhaut’s debris disk.
Want to learn something of the geology of the Grand Canyon? The Geological Society of America has just published a special volume of papers, with the introductory and afterword [pdf] chapters available online.
Those two chapters provide a very good layman’s summary of the geological state-of-the-art of the Grand Canyon. Very worthwhile reading if you plan to hike down in the near future.
Scientists now think it is possible for there to be floating methane ice on the lakes of Titan.
Up to this point, Cassini scientists assumed that Titan lakes would not have floating ice, because solid methane is denser than liquid methane and would sink. But the new model considers the interaction between the lakes and the atmosphere, resulting in different mixtures of compositions, pockets of nitrogen gas, and changes in temperature. The result, scientists found, is that winter ice will float in Titan’s methane-and-ethane-rich lakes and seas if the temperature is below the freezing point of methane — minus 297 degrees Fahrenheit (90.4 kelvins). The scientists realized all the varieties of ice they considered would float if they were composed of at least 5 percent “air,” which is an average composition for young sea ice on Earth. (“Air” on Titan has significantly more nitrogen than Earth air and almost no oxygen.)
The part-timing of America: An Omaha-based chain of fast food restauants has decided to cut the hours of all non-management employees workers’ hours to part time in order to avoid the costs of Obamacare.
It is the audience that counts: The attendees at a labor event laughed and applauded the president of the Chicago Teachers Union when she joked about killing the rich.
