The Halloween season is here, and even the cosmos get in on the occasion—at least if you squint hard enough at the night sky. To gear up for the celebrations, NASA recently highlighted a pair of ...

Located within the constellation Perseus lies a star called Algol, also known as ‘Demon Star’ or ‘The Ghoul’. You can spot ...

Discover the best things to see in the night sky this month, from planets to moon meet-ups and deep-sky wonders.

Evidence for the possible super-Earth has been lurking for years in NASA data. Pavel Rabtsevich found it—with a little help ...

Could that faint glow in the autumn sky be an entire galaxy sending us light from 2.5 million years ago?

There are hundreds of billions of stars in the galaxy we live in. Many of them have their own exoplanets. So why haven’t we ...

The Andromeda galaxy (M31) has been captured by the Chandra X-ray Telescope. See the imagery and hear a sonification of it.

Astronomers said this month (September 15, 2026) they’ve found a way to decode weather on exoplanets. They used a new technique to look at a planetary-mass object called SIMP 0136. They found its ...

This summer, exoplanet science — the study of planets orbiting stars beyond our sun — took a big step forward. Reports of helium gas escaping from the atmosphere of LHS 1140b propelled this exoplanet ...

Astronomers using the James Webb Space Telescope have discovered that a distant alien planet's atmosphere is surprisingly lopsided. Located 1,300 light-years away, the scorching gas giant WASP-17b ...

Astronomers have discovered that a scorching-hot planet 320 light-years away shares a striking chemical similarity with its host star, providing the first direct evidence for a fundamental assumption ...

Each Monday, I pick North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the Northern Hemisphere).