The farthest object ever explored is slowly revealing its secrets, as scientists piece together the puzzles of Ultima Thule – the Kuiper Belt object NASA's New Horizons spacecraft flew past on New Year's Day, four billion ...
Japan's space agency said Monday that its Hayabusa2 spacecraft will follow up last month's touchdown on a distant asteroid with another risky mission—dropping an explosive on the asteroid to make a crater and then collect ...
These images from ESA's Mars Express satellite show a branching, desiccated system of trenches and valleys, signs of ancient water flow that hint at a warmer, wetter past for the Red Planet.
Fragments of moon rock brought back from the lunar surface by astronauts on the Apollo space missions are providing new insights about where our planet's life-giving water came from.
A NASA glaciologist has discovered a possible second impact crater buried under more than a mile of ice in northwest Greenland.
The wonders – and mysteries – of Kuiper Belt object 2014 MU69 continue to multiply as NASA's New Horizons spacecraft beams home new images of its New Year's Day 2019 flyby target.
Wow. Sunday night's total lunar eclipse offered an amazing view, and for a few astute observers, a little surprise.
An international team of scientists is challenging our understanding of a part of Earth's history by looking at the Moon, the most complete and accessible chronicle of the asteroid collisions that carved our solar system.
A NASA spacecraft 4 billion miles from Earth yielded its first close-up pictures Wednesday of the most distant celestial object ever explored, depicting what looks like a reddish snowman.
The spacecraft team that brought us close-ups of Pluto will ring in the new year by exploring an even more distant and mysterious world.