Comment by Kathy on February 16, 2013 at 5:18pm

Another Meteor Flashes Across Bay Area Skies

 

http://sanfrancisco.cbslocal.com/?lead=another-meteor-flashes-acros...

 

Suspected meteor explosion reported in central Cuba

 

http://news.xinhuanet.com/english/sci/2013-02/16/c_132171646.htm

 

 

Exploding fireballs reported all over the globe: Japan, Russia, Cuba, US...

 

http://thewatchers.adorraeli.com/2013/02/16/in-last-2-days-fireball...

Admin Comment by Bean on February 17, 2013 at 2:47pm

In 2009.. "A recent U.S. military policy decision now explicitly states that observations by hush-hush government spacecraft of incoming bolides and fireballs are classified secret and are not to be released, SPACE.com has learned." (June 10, 2009 - space.com "Military Hush-Up: Incoming Space Rocks Now Classified" - http://www.space.com/6829-military-hush-incoming-space-rocks-classi...)

Comment by Kathy on February 19, 2013 at 6:39pm

Russia’s Meteorite Explosion Was “Heard” Half-Way Around the World

A big ol' meteroite exploded over Russia last Friday, and while the shock waves that shot across the Internet were definitely strong, the ones that shot through the atmosphere were pretty impressive too. The blast was loud enough for infrasound sensors as far as half-a-world away to hear.

A lot of this "noise" probably wasn't audible to our puny human ears, which bottom out at around 20 hertz. It's still detectable though and there are dozens of facilities around the globe that have sensors devoted to detecting sounds 20hz on down. Why? Mainly to keep an ear out for possible nuke testing, which generate similar (but distinguishable different) sounds in the same range.

 

It shouldn't be a surprise that, at about 20 times more powerful than the nuclear weapons used in World War II, the meteorite made some noise. 11 sensors, at stations as far away as Greenland and Africa, registered the bang. It wasn't exactly on par with the most powerful nukes ever tested, but being heard continents away is definitely an accomplishment. Talk about going out with a bang.

http://gizmodo.com/5984861/russias-meteor-explosion-was-heard-half+...

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