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Stories about: cosmic collision

Martian Moon Formed From Cosmic Impact According to a new scientific study, it would appear that the material which makes up the Martian moon Phobos was created billions of years ago, when a comet or asteroid impacted the Red Planet.This theory is remarkably similar to the one seeking to explain how our own Moon formed. Experts say it coalesced from the d... 27 September 2010 10:07 GMT The Moon: Strangest Body in the Solar System While all planets in the solar system have asteroids and moons of different sizes orbiting them, Earth seems to make an exception. It has the biggest single moon, relative to the planet's size. There are different theories regarding how it formed, but only one stands out as the most popular. It looks like the M... 21 November 2007 03:03 GMT