What gave the moon its overall shape? Tidal forces.
During the past 3.5 billion years, it is estimated that more than 80 bodies, larger than the dinosaur-killing asteroid that struck the Yucatan Peninsula 66 million years ago, have bombarded Earth.
Scientists are trying to study how a category of unusual impact craters formed on Mars.
Dramatic underground explosions, perhaps involving ice, are responsible for the pits inside the two large martian impact craters, that has been captured by ESA`s Mars Express on January 4.
While most of Saturn`s moons display their ancient faces pockmarked by thousands of craters, Titan-Saturn`s largest moon-may look much younger than it really is because its craters are getting erased, researchers say.
It seems Mars is a beaten and battered planet in the solar system, as its surface has been pocked by more than 635,000 impact craters.
Newly released images taken by ESA’s Mars Express show an unusual accumulation of young craters in the large outflow channel called Ares Vallis.
The shadowy craters of the moon`s South Pole could be the coldest spot in the solar system, NASA scientists have said.
Day in Pics: 24th October
Showbiz World - October 24, 2014
Aamir Khan's sensational 'PK' posters