NASA's Curiosity rover has made a groundbreaking discovery on Mars by uncovering pure sulfur crystals within a broken rock.

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

Certain metallic rocks seem to be making oxygen in the dark, without light or sunshine, at the bottom of the ocean.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The discovery of a new asteroid this month has turned out to be Elon Musk's Tesla Roadster launched by SpaceX in 2018.