Most scientists today agree that at least some water existed on the surface of Mars during the Noachian epoch, roughly 4.1 to 3.7 billion years ago.

A new study suggests the extinction of Neanderthals nearly coincided with a shift in Earth's magnetic field that let more ...

NASA’s PUNCH mission just took a big step forward with the first images from its solar-observing instruments, revealing the outer atmosphere of the Sun like never before. As the four-satellite ...