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·Astronomy: Sun - THE SOLAR SCOPE
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  Venus: Astronomy: Venus - Impact-HAVING AN IMPACT
Posted on Saturday, December 11 @ 01:33:51 CST by astronomy
 
 
  Venus

HAVING AN IMPACT

Like every planet, Venus lias been struck repeatedly by meteorites. The craters uncovered m Magellan's images show a spectrum of types. many tainiliar from other moons and planets.

The largest is a Hooded basin called Mead which is 175 miles (280 km) wide. Most craters show signs of post-impact lava floods, almost as if they tapped a source of molten material below the surface.

Venus's atmosphere is dense enough to filter out smaller meteorites, and all its creaters appear to be bigger than 3 miles (5 km) in diameter. Magellan did. however, find dark splotches where the surface seems to have been pulverized. The culprit may have been a shock wave—an aerial hammerblow from a meteorite that broke up before striking the ground.

 
 
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