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Opis: This was a good year for the Perseids meteor shower. A key reason was the Moon was absent from lighting up Earth's night sky so that more meteors were visible than usual. Where was the Moon? It was busy visiting the Sun. Near the Perseids peak, the Moon moved directly in front of the Sun and created a total solar eclipse visible from Greenland and Spain. The Perseids occur when the Earth collides with a stream of Sun-orbiting debris cast off by Comet Swift-Tuttle. Perseid meteors, although typically only the size of a sand grain, tend to be fast and bright because Swift-Tuttle's debris orbits the Sun in a direction partly opposite Earth's orbital motion. In the featured image compilation, accumulated over several nights from Jizerka in the Czech Republic, the Perseids meteor streaks can be traced back to a single location on the sky -- its radiant in Perseus.
Autorzy i wydawcy:
Robert Nemiroff
(MTU) &
Jerry Bonnell (UMCP)
Przedstawiciel NASA: Amber Straughn,
obowiązują określone prawa.
Polityka prywatności NASA,
polityka dostępności NASA,
uwagi.
Serwis prowadzony przez:
ASD at
NASA /
GSFC,
NASA Science Activation
oraz Michigan Tech. U.