First contact seven missions that gave us our first real look at alien worlds

Astronomers are now regularly detecting planets thousands of light years from Earth – but have we missed one in our own Solar System?

Although it’s by no means certain, scientists are slowly accumulating evidence that life once existed on the Red Planet

The comet dubbed 3I/ATLAS, a rare extrasolar intruder, continues to barrel through the Solar System, attracting interest and speculation from astronomers and space scientists worldwide. Harvard astron

We humans are always wondering whether we’re alone in the Universe. But what if we are one of a long line of species that were around long before our planet even existed? This intriguing idea, that li

As many as 300,000 displaced Gazans streamed northward on Jan. 27, after Israel reopened the Netzarim corridor, which bisects the Gaza Strip. Carrying their belongings in plastic bags and flour sacks

An artist’s impression of Cha 1107-7626 accreting material ...