... Degas Ray Crater on Mercury . ... Like the Earth's Moon, Mercury is scarred with craters testifying to an intense bombardment during the early history of the Solar System. In 1974, the Mariner 10 spacecraft surveyed this innermost planet up close, producing the only detailed images of its tortured surface. ... Manicouagan Impact Crater on Earth . ... The Manicouagan Crater in northern Canada is one of the oldest impact craters known. ... Composing the Omega Nebula . ...