Mercury, First Planet From the Sun: Latest Discoveries
Mercury is our solar system's smallest planet.
NASA's Messenger spacecraft has snapped a solar system family portrait.
A list of skywatching events in January 2011 that you don't want to miss.
Early risers this week will be treated to a spectacular display: Mercury, Venus, and Saturn will appear just before sunrise.
How to best observe the major planets of our Solar System. Some have worlds of their own.
The U.S. Postal Service has unveiled the designs for two new space-themed stamps to be released in 2011 to honor Alan Shepard and a mission to Mercury.
Mercury is the closest planet to the Sun in Earth’s solar system, but has no moons and no substantial atmosphere. Mercury is named after the Roman swift-footed messenger God.
Two NASA satellites peering at the sun have snapped photos of Mercury's long, comet-like tail, and it took an interested amateur to bring the pictures to light.
Stargazers can get a great look at Jupiter on any clear night for the rest of September. The giant planet, always bright, will be especially hard to miss as it makes its closest pass to Earth for the year.
Whenever Messenger zooms close to the sun, the probe makes a search for hypothetical tiny asteroids called vulcanoids.
A new photo shows the Earth and moon as seen from deep space by a NASA probe near the sun.
Next week is the best 2010 morning apparition of Mercury for northern hemisphere observers.
New U.S. postage stamps to be released next year will honor 1st American in space Alan Shepard and NASA's MESSENGER mission to Mercury.
A NASA spacecraft that has been studying Mercury, the innermost planet in our solar system, is about eight months away from achieving its main objective of entering the planet's orbit. But, after a series of flybys, the steadfast probe has already unlocke
Space rock aficionados are set to descend on New York for the 73rd Annual Meeting of the Meteoritical Society, beginning Monday and running through July 30.
Mercury could be wracked by intense magnetic disturbances and have experienced volcanic activity for much longer than once thought, according to several new studies.
Guenter Wendt, the original pad leader for NASA's manned space program and the last man the Apollo astronauts saw before launching to the moon, died at his home in Merritt Island, Fla., Monday.
On Thursday April 15, the evening starts with a triple conjunction of the moon, Mercury, and Venus, then continues with Mars visiting the Beehive.