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Latest Grazing lunar occultation Stories

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2011-06-30 09:25:00

On the evening of July 3 at 11:05:30 p.m. EDT -- at a distance of 280 million miles into space that poses no threat to Earth -- 52 Europa will pass in front of star TYC 0292-00339-1 in the constellation Virgo. The asteroid will eclipse the star's light for 17.9 seconds in a process known as occultation. Here on Earth, astronomers can measure the exact length of time the star's light is blocked and use those calculations to help verify the size of 52 Europa. They'll also have a live Web chat...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.