Mercury
The first planet from the Sun in the solar system. Mercury orbits the Sun at an average distance of 0.4 times Earth's distance. The planet is just five percent as massive as Earth, and it about 50 percent larger than the Moon. It is made of solid, rocky material that is heavily cratered, and it has no significant atmosphere. Mercury has no moons.
Radio Programs
Morning Mercury
Sunday, May 23, 2010
Venus and Mercury
Wednesday, March 31, 2010
Mercury in the Evening
Sunday, January 20, 2008
