Your blood is also red because of a mixture of iron and oxygen in a molecule called hemoglobin. So in a way, the ancient connection between the planet Mars and blood wasn’t completely wrong. Rust, ...

No one expected these glittering bits among the gray lunar dust back then. The beads, smaller than grains of sand, formed ...

On Mars, a surprise was hiding in plain sight. A tall mound near the edge of Jezero Crater turned out to be something ...

New James Webb Space Telescope data reveal Pluto's high-altitude haze is a key driver of the climate on the dwarf planet, ...

The NASA satellite Odyssey captured the enormous equatorial volcano as its tip peeked above the morning clouds of water ice – ...

Given just how big space is, the solar system seems like it shouldn't be too mysterious. But there are actually plenty of ...

The idea of terraforming Mars—essentially reshaping the planet to support Earth life—has captured imaginations for decades.