A mission will deliver rock and soil from Mars to laboratories on Earth in the 2030s. Mars Sample Return (MSR) is led by NASA ...

Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.

Two NASA rovers on Mars recently made two independent discoveries further indicating that ancient life may have once existed ...

The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

But Curiosity wasn't the only one with a geological mystery. At the same time, roughly 2,300 miles away on the other side of ...

New research is reshaping how scientists understand the earliest days of Earth’s formation—suggesting that the deep interior ...

Lake Salda, in southwestern Turkey, bears a close resemblance to Mars' Jezero crater, which is currently being sampled by ...

It started as another exoplanet in a group labeled “ordinary.” No one expected that a world, once thought to be a mini-Neptune, would reveal traits of a super-Venus and change how we see certain ...

NASA’s James Webb Space Telescope has discovered 55 Cancri e, a super-Earth located 41 light-years away. This planet, five times larger than Earth, has extreme temperatures reaching 2,400°C and ...

told The Associated Press some people colloquially refer to the type of conjunction happening this weekend as a "Venus kiss," because of the planet's relatively close proximity to the Earth.

Two American astronauts who've been stuck in space since last year are finally back on planet Earth. The SpaceX capsule carrying Suni Williams and Butch Wilmore, along with fellow NASA astronaut ...