Simulations show Mercury may have been victim of hit-and-run collision
Mercury contracted more than prior estimates, evidence shows
New evidence gathered by NASA's MESSENGER spacecraft at Mercury indicates the planet closest to the sun has shrunk up to 7 kilometers in radius over the past 4 billion years, much more than earlier estimates.
High levels of molecular chlorine found in Arctic atmosphere
(Phys.org) —Scientists studying the atmosphere above Barrow, Alaska, have discovered unprecedented levels of molecular chlorine in the air, a new study reports.
New insights concerning the early bombardment history on Mercury
(Phys.org) —The surface of Mercury is rather different from those of well-known rocky bodies like the Moon and Mars. Early images from the Mariner 10 spacecraft unveiled a planet covered by smooth plains ...
A close-up view of Mercury: Researchers find the planet may have had a dynamic past
New observations from a spacecraft orbiting Mercury have revealed that the tiny, pockmarked planet harbors a highly unusual interior and the crafts glimpse of Mercurys surface topography ...
Earth's massive extinction: The story gets worse
Scientists have uncovered a lot about the Earth's greatest extinction event that took place 250 million years ago when rapid climate change wiped out nearly all marine species and a majority of those on land. ...
Mercury's magnetic field -- nipped in the bud
(PhysOrg.com) -- Mercury, the smallest of the eight planets with a diameter of 4900 kilometres and the closest to the Sun, looks more like the Moon than the Earth from the outside. It is the only rocky planet ...
Kepler finds first earth-size planets beyond our solar system
(PhysOrg.com) -- NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called Kepler-20e and Kepler-20f, are too close to their star ...
A water ocean on Titan?
Oddities in the rotation of Saturn's largest moon Titan might add to growing evidence that it harbors an underground ocean, researchers suggest.
NASA spacecraft now circling Mercury -- a first
For the first time, Earth has a regular orbiting eye-in-the-sky spying on the solar system's smallest and strangest planet, Mercury.
MESSENGER data suggest recurring meteor shower on Mercury
The closest planet to the sun appears to get hit by a periodic meteor shower, possibly associated with a comet that produces multiple events annually on Earth.
Image: Icy rocks around Saturn
(Phys.org) —Earth is the only planet in our Solar System to have a single solitary moon. While others, such as Mercury and Venus, have none, the gas giants have accumulated crowds of orbiting bodies—Saturn, ...
MESSENGER provides first optical images of ice near Mercury's north pole
NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft has provided the first optical images of ice and other frozen volatile materials within permanently shadowed craters ...
Violent eruptions in Mercury's past could hold clues to its formation
Volcanoes on Mercury may have been more explosive than previously anticipated, and they may have erupted more recently, as well.