Meanwhile we had an asteroid impact in our home #chelly http://www.youtube.com/watch?v=7c-0iwBEswE … supesonic blast wave caused much damageposted by zengargoyle at 11:05 PM on February 14
Russian space agency Roskosmos has confirmed the object that crashed in the Chelyabinsk region is a meteorite: “According to preliminary estimates, this space object is of non-technogenic origin and qualifies as a meteorite. It was moving at a low trajectory with a speed of about 30 km/s.”But then in the same article they say:
According to unconfirmed reports, the meteorite was intercepted by an air defense unit at the Urzhumka settlement near Chelyabinsk. A missile salvo blew the meteorite to pieces at an altitude of 20 kilometers, local newspaper Znak reports quoting a source in the military.... without bothering to mention that 30 km/second is 67,108 miles per hour, or 88 times the speed of sound, and that claims of interception are, therefore, exceedingly unlikely.
Regnum news agency quoted a military source who claimed that the vapor condensation trail of the meteorite speaks to the fact that the meteorite was intercepted by air defenses.
double block and bleed: "As much as I love winter, I don't think I could emotionally survive one at such a high latitude (55 degrees N.) I wonder how long the darkness lasts there in December?"Night between 21 and 22 December: sunset 17:26, sunrise 10:19. It's not too bad, and the short summer nights* more than make up for it in my opinion. (Chelyabinsk is about the same latitude as my home town, but since it's much more off-center inside its time zone they have darker winter mornings and longer afternoons. Where I come from daytime is more like nine to four.)
_ | | +-------------------+ | | | CHICKEN LITTLE | | WAS | | RIGHT!!! | | | +-------------------+ | | | | | | | | | | -
The impact would have caused some of the largest megatsunamis in Earth's history. A cloud of super-heated dust, ash and steam would have spread from the crater as the impactor burrowed underground in less than a second. Excavated material along with pieces of the impactor, ejected out of the atmosphere by the blast, would have been heated to incandescence upon re-entry, broiling the Earth's surface and possibly igniting wildfires; meanwhile, colossal shock waves would have triggered global earthquakes and volcanic eruptions. The emission of dust and particles could have covered the entire surface of the Earth for several years, possibly a decade, creating a harsh environment for living things. The shock production of carbon dioxide caused by the destruction of carbonate rocks would have led to a sudden greenhouse effect. Over a longer period, sunlight would have been blocked from reaching the surface of the earth by the dust particles in the atmosphere, cooling the surface dramatically. Photosynthesis by plants would also have been interrupted, affecting the entire food chain.Criminy!
"I went to see what that flash in the sky was about," he told AP. "And then the window glass shattered, bouncing back on me. My beard was cut open, but not deep. They patched me up, it’s OK now."I like the idea of this real-life Chuck Norris figure, a man so tough that his beard took all the impact of a glass window shattered by a meteor that exploded with the force of a nuclear bomb.
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posted by Joakim Ziegler at 10:27 PM on February 14 [12 favorites]