Contact Bob | About this Site | Site Map Mercurys surface looks very similar to the Moons. It is covered in craters, although does not have the large dark oceans that we see on the Moons surface. This is because the planet has no atmosphere or air. If small rocks (asteroids and meteors) head for Earth, most burn up in

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  Universe TodaySpace and astronomy news Login Login Home Members Guide to Space Carnival Photos Videos Forum Contact Privacy Mercury, as imaged by the MESSENGER spacecraft, revealing parts of the never seen by human eyes. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution

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Menu Home Sun Moon Planets Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Spacecraft Small Bodies Asteroids Comets Meteors News Mercury Facts Mercury is the closest planet to the Sun. Mercury is slightly smaller in diameter than the moons Ganymede and Titan but more than twice as massive. Planet Profile

Mercury Home | Site Map | Whats New | Image Index | Copyright | Posters | ScienceViews | Science Fiction Timelines | Mercury When men are arrived at the goal, they should not turn back. - Plutarch Table of Contents Mercury Introduction   Mercury Science 11.03.09 Hidden Territory on Mercury Revealed 10.07.08 MESSE

Mercury is the smallest planet in the Solar System and the one closest to the Sun , with an orbital period of about Earth days, which is much faster than any other planet in the Solar System. Seen from Earth, it appears to move around its orbit in about days. It has no known natural satellite s. It is named after the R