Emmylou Harris – Wayfaring Stranger
An evening pause:
Year: 2013
The abandoned calibration targets used by surveillance satellites of the 1960s.
The abandoned calibration targets used by surveillance satellites of the 1960s.
“There are dozens of aerial photo calibration targets across the USA,” the Center for Land Use Interpretation reports, “curious land-based two-dimensional optical artifacts used for the development of aerial photography and aircraft. They were made mostly in the 1950s and 1960s, though some apparently later than that, and many are still in use, though their history is obscure.”
“Doomsday never arrived, apparently.”
“Doomsday never arrived, apparently.”
The topic isn’t meteorites, but something more critical to our survival as a society.
Mercury, in full color.
Mercury, in full color.
Scientists working with NASA’s Messenger probe have produced a global color map of the surface of Mercury, closest planet to the Sun. Thousands of sets of images were enhanced then stitched together in a mosaic to create a detailed image covering the entire planet.
Russian scientists have identified the first fragments from Friday’s meteorite in Chelyabinsk.
Russian scientists have identified the first fragments from Friday’s meteorite in Chelyabinsk.
The pieces, found on the ice of a lake, were stony chondrites.
Suzanne Vega – Small Blue Thing
An evening pause:
A planet evaporates.
Lena Leclaire – Call Me Maybe
An evening pause:
Notorious Folk – Romanian Train Song
An evening pause: Some hot fiddle music from Romania to keep us awake this winter’s night.
Largest in a century.
More on today’s Russian meteorite: Largest in a century.
My earlier skepticism appears incorrect. This impact actually happened.
Note the article’s sense of outrage and panic that we aren’t looking for these types of rocks:
Although a network of telescopes watches for asteroids that might strike Earth, it is geared towards spotting larger objects — between 100 metres and a kilometre in size. “Objects like that are nearly impossible to see until a day or two before impact,” says Timothy Spahr, Director of the Minor Planet Center in Cambridge, Massachusetts, which tracks asteroids and small bodies. So far as he knows, he says, his centre also failed to spot the approaching rock.
Yet, today’s impact actually illustrates the wisdom of excluding this kind of small asteroid from searches. They aren’t big enough to do serious harm, and trying to find them would hamper searches for larger asteroids that do pose a serious risk.
An outline of the cuts NASA would do if sequestration occurs on March 1 includes shutting down commercial crew while leaving the Space Launch System untouched.
An outline of the cuts NASA proposes if sequestration occurs on March 1 includes shutting down commercial crew while leaving the Space Launch System untouched.
I am in favor of sequestration, as it will only bring NASA’s budget back to the numbers the agency received in 2005, numbers that were then totally sufficient to build Constellation and fly the shuttle. Now that the cost of the shuttle is gone there should be sufficient cash today for everything NASA wants to do.
To favor the very expensive and not very useful SLS system over the new commercial crew contracts however is madness. I suspect this letter is meant as a lobbying sledge hammer to try to convince Congress to cancel sequestration. If it is serious, however, than say good-bye to any manned American spacecraft for at least another few years, as I expect the new private companies will not disappear, but their effort will be slowed significantly as they search for alternative funding.
How to watch asteroid 2012 DA14 zip past the Earth today.
How to watch asteroid 2012 DA14 zip past the Earth today.