... The only spacecraft to explore Mercury close-up was Mariner 10 which executed 3 flybys of Mercury in 1974 and 1975, surveying approximately 45 percent of its surface. ...
... Because Mercury rotates exactly three times every two orbits around the Sun , and because Mercury 's orbit is so elliptical, a visitor to Mercury might see the Sun rise, stop in the sky, go back toward the rising horizon , stop again, and then set quickly ...
... Astronomy Picture of the Day . Mercury: A Cratered Inferno . << Yesterday . 12.09.1996 . Tomorrow >> . ... Credit Copyright: Mariner 10 , NASA Explanation: Mercury's surface looks similar to our Moon's. Each is heavily cratered and ...
... Recent images from the robotic MESSENGER spacecraft that flew by Mercury last October show previously uncharted regions of Mercury that have large craters with an internal smoothness similar to the maria on Earth's own Moon. ...
... Astronomy Picture of the Day . A Superior Conjunction Of Mercury . << Yesterday . 8.09.1999 . Tomorrow >> . ... Mercury , the solar system's innermost planet, zips past this point in its orbit today. ...
... Astronomy Picture of the Day . A Superior Conjunction Of Mercury . << Yesterday . 8.09.1999 . Tomorrow >> . ... Mercury , the solar system's innermost planet, zips past this point in its orbit today. ...
... Astronomy Picture of the Day . Gravitational Anomalies of Mercury . << Yesterday . 5.05.2015 . Tomorrow >> . ... Washington Explanation: What's that under the surface of Mercury? ...