Mercury, the smallest and innermost planet in our solar system, may be home to a dazzling secret hidden beneath its scorched ...

A planet 140 light-years from Earth is rapidly coming apart due to its close proximity to its star. The roasting planet is effectively evaporating away: It sheds an enormous amount of surface minerals ...

This image shows Mercury as a small black dot moving across the face of the Sun during its rare transit on May 9, 2016.  This image shows a gravity map of Mercury created using data from NASA’s ...

WASHINGTON (Reuters) -Astronomers have spotted a small rocky planet that orbits perilously close to its host star ...

MIT astronomers have found a Mercury-sized planet, located 140 light-years away, that is disintegrating rapidly due to its ...

Astronomers discovered a planet that orbits its star so closely that its surface is being scorched into magma and vaporizing ...

We were doing the typical planet vetting, and I happened to spot this signal that appeared very unusual.” An orbiting ...

Planets' temperatures are largely influenced by their structural characteristics and proximity to the Sun, however, Venus notably presents a unique case.

As President Donald Trump’s pick to be NASA administrator, Jared Isaacman is going to have to navigate Washington politics, ...