See the videos: Sprites, Asteroids & ISON
Last
night PBS Hawaii screened
three great astronomy programs
If
you missed any of them, the videos are available at:
The
search for SPRITES, large-scale
electrical discharges that occur high above thunderstorm clouds.
Will future asteroids trigger massive
extinctions—or be mined for precious minerals? Features Ed Lu and an update on B612’s Sentinel Mission.
Comet of the Century.
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