Could a frozen wanderer older than the Sun rewrite what we know about the galaxy’s past? Comet 3I/ATLAS, the third known ...

The boom in AI could find a new home in orbit, at least if three of the world's richest men find a way to make it work.

Time is not the same everywhere in space. On Mars, it flows on average 477 microseconds more each Earth day (24h) than on ...