For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be tough to see without a telescope or high ...

A European-Japanese spacecraft has beamed back some of the best close-up photos yet of Mercury's north ... top of the least explored planet in the inner solar system. Cameras also captured views ...

A European-Japanese spacecraft has beamed back some of the best close-up photos yet of Mercury's north pole as part of only the second human ... showing the permanently shadowed craters at the top of ...

Ancient lunar basins that formed within about 100 million years after the lunar magma ocean solidified have fully relaxed, owing to the high temperature of the lower crust, and thus escaped ...