The Hubble Space Telescope has made multiple observations of exoplanet WASP-121 b, also known as Tylos. The extreme ...

Interstellar object 3I/ATLAS, the third such visitor ever observed, is exhibiting unusual energy and chemical behavior as it ...

Data from the James Webb Space Telescope on exoplanet K2-18b has revealed the "strongest hints yet of biological activity ...

So, to create a must-read story list for you, we asked our staff to select their favorite pieces of 2025. Alas, while you're ...

NASA reveals high-resolution images of interstellar comet 3I/ATLAS after the US shutdown. Is it alien tech? Associate ...

For only the second time ever, a collision between two asteroids has been observed around an alien star not too far beyond ...

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

Fourth anniversaries aren’t often causes for celebration. But in the case of the James Webb Space Telescope (JWST), which ...

Comet 3I/ATLAS was discovered on July 1, 2025, by the NASA-funded ATLAS telescope in Rio Hurtado, Chile and was quickly ...

An alien comet, a Martian volcano, a man’s fall from the sun and a groundbreaking telescope’s first images: Here are the most jaw-dropping space photos of 2025.

Astronomers studying a nearby star expected to find a planet. Instead, they caught two massive collisions in the Eye of ...

Interstellar comet 3I/ATLAS passes Earth, stunning scientists with a million-kilometre anti-tail and prompting reflections on ...