December 2011
22 posts
Interactive Solar System →
“…I don’t feel rejected by the sky. I’m part of it-tiny, to be...”
– Carl Sagan, Pale Blue Dot
Happy Winter Solstice, Northern Hemisphere! :)
Black Hole Sound Waves →
Sound waves 57 octaves lower than middle-C are rumbling away from a supermassive black hole in the Perseus cluster.
Astronomers using NASA’s Chandra X-ray Observatory have found, for the first time, sound waves from a supermassive black hole. The “note” is the deepest ever detected from any object in our Universe. The tremendous amounts of energy carried by these...
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