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A Meteor Streaking Through the Sky From Six Vantage Points - Multimedia Feature -
"Debris from a meteor streaked through the sky with a blinding flash in western Siberia early Friday. A number of drivers captured the incident on their dashboard cameras, an accessory used by Russian motorists to document whatever may happen on the road. Here you can see six videos, uploaded to YouTube, aligned to represent the fiery trajectory from various viewpoints. Click play on any video to start all videos."
pervasive-computing  crowdsourcing  sousveillance  meteor  video  country(Russia) 
february 2013 by tsuomela
Science Magazine: Sign In
"Doppler weather radar imaging enabled the rapid recovery of the Sutter’s Mill meteorite after a rare 4-kiloton of TNT–equivalent asteroid impact over the foothills of the Sierra Nevada in northern California. The recovered meteorites survived a record high-speed entry of 28.6 kilometers per second from an orbit close to that of Jupiter-family comets (Tisserand’s parameter = 2.8 ± 0.3). Sutter’s Mill is a regolith breccia composed of CM (Mighei)–type carbonaceous chondrite and highly reduced xenolithic materials. It exhibits considerable diversity of mineralogy, petrography, and isotope and organic chemistry, resulting from a complex formation history of the parent body surface. That diversity is quickly masked by alteration once in the terrestrial environment but will need to be considered when samples returned by missions to C-class asteroids are interpreted."
science  meteor  astronomy  meteorology  radar 
february 2013 by tsuomela

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