NASA has more than 20 Earth-observing satellites that give researchers a global perspective on the interconnected Earth system.

Ice volcanoes emit a "thicker, slushy mix of ice and water, or perhaps a solid flow like glaciers" rather than lava.

Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars’ early history.

Asteroid 16 Psyche, which NASA intends to visit with a spacecraft in 2026, may be less heavy metal and more hard rock than formerly thought.

New research from Washington University in St. Louis suggests a fundamental reason why Mars has no water on its surface.

A US-based startup aims to build robotic outposts and spacecraft that can be sent to space near the Moon.

A state-of-the-art asteroid alert system can scan the entire dark sky every 24 hours for dangerous bodies that could plummet toward Earth.

The hydrothermal crater lake of the Poás volcano in Costa Rica is one of the most hostile habitats on the planet.

Liquid water previously detected under Mars’ ice-covered south pole is probably just a dusty mirage, according to a new study.

Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars’ early history.

This has never been done before, to push macroscopic objects at speeds approaching the speed of light. Mass is such a huge barrier.

Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars’ early history.

NASA has signed agreements with three U.S. companies to develop designs of space stations and other commercial destinations in space.

A chunk of rock and iron, which was 60 feet across, served as a violent reminder that Earth, bombarded daily with tons of space-going debris

Watch as eight stars skirt a black hole 1 million times the mass of the Sun in these supercomputer simulations.

NASA and the nation's top federal nuclear research lab on Friday put out a request for proposals for a fission surface power system.

A cold trap refers to a pocket on the surface of a solid body in which volatile gases can accrue and remain still for long periods of time.

A new rocket designed to launch humans to the moon, Mars and beyond will launch next year with a familiar fuzzy figure—Snoopy.

Astronomers have discovered a small black hole outside the Milky Way by looking at how it influences the motion of a star in its vicinity.

Among other goals, James Webb will search the atmospheres of alien planets for what scientists call "biosignatures" -- the presence of life.