24/02/2025

Ancient beaches testify to long-ago ocean on Mars

A Chinese rover that landed on Mars in 2021 detected evidence of underground beach deposits in an area thought to have once been the site of an ancient sea, providing further evidence that the planet long ago had a large ...

If you're going to call aliens, use this number

Let's dive into one of those cosmic curiosities that's bound to blow your mind: how we might chat with aliens. And no, I'm not talking about elaborate coded messages or flashy signals. We're talking about something incredibly ...

How astronomers make deep maps of the Milky Way

Have you ever wondered how astronomers manage to map out the Milky Way when it's so incredibly vast? One of the most powerful tools is something called 21 cm radiation.

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