Martian Winds Have Created ____

Q47: Venus and Earth have _ surfaces and

Q48: The inner planets are sometimes called the

Q49: The giant meteor impact at the end

Q50: _ is the smallest of the inner

Q51: The surface of Venus is hidden by

Q53: Of all the planets in the solar

Q54: When 17^th century astronomer _ first viewed

Q55: The nucleus of a comet is a

Q56: Astronomers think that most comets come from

Q57: The four planets nearest the sun are