Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing momentum from a launch starting point on Earth. It can take missions ...

A new experimental study published in Geochimica et Cosmochimica Acta reveals that Mercury’s sulfur-rich interior behaves in ...

A magma that would freeze solid on Earth can keep flowing on Mercury, and sulfur is the reason. New laboratory experiments ...

Mercury is a small, rocky planet about which researchers know relatively little. Two missions, taking readings as they passed ...

Sulfur on Mercury was as important to the planet's formation as oxygen was to Earth's evolution, the study suggests.

A year on Mercury lasts 88 Earth days, with a solar day (the time from noon to noon on the planet’s surface) lasting 176 Earth days, and a sidereal day (the time of one complete rotation in relation ...

Add Yahoo as a preferred source to see more of our stories on Google. Meteorites found in the Sahara Desert might be pieces of Mercury that broke off as the result of a collision when the Solar System ...

Researchers have found that Mercury's low-iron, high-sulfur chemistry allows its magma to stay liquid at lower temperatures ...

The early years of our solar system were a period of unimaginable chaos and violence, a gravitational free-for-all where colliding planetary embryos competed for survival. In this tumultuous ...

KINGSPORT, Tenn. (WJHL) —This week, the night sky will provide the opportunity to view up to seven planets in our solar system. Mercury, Venus, Mars, Jupiter and Saturn will be visible to the naked ...