Mercury may have gotten much of its polar ice within a single Mercurian day following a massive asteroid impact, a new study ...

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 ...

Mercury’s water ice has always looked like a contradiction. By day, the planet’s surface can soar to about 430 degrees ...

Despite being the closest planet to the Sun, Mercury hosts water ice at its poles. Now scientists may know how it got there.

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 ...

The Solar System is the name given to the part of space that surrounds the Sun. Even though it is bigger than anything we can imagine, the Solar System is actually a very tiny part of the universe.