Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are ...

A nearby Earth-sized planet offers a rare chance to study how atmospheres survive or disappear on rocky worlds.

New research finds the galaxy's most common stars host many super-Earths but almost no sub-Neptunes, reshaping planet ...

A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.

Two airplane-size asteroids, 2026 HJ3 and 2026 HR, are set to make a safe close approach to Earth on 27 April 2026, passing ...

Around stars like our Sun, the most common planets aren't giant Jupiters but smaller cousins: sub‑Neptunes, which resemble ...

From martial artists to master magicians, these are the first ten members of the Justice Society ranked by their power.

Discover 25 mind blowing ocean facts you never knew! Explore the Mariana Trench, hidden mountain ranges, and how the ocean ...

Gliese 581c is a planet that’s about 20 light-years away, hanging out in the constellation Libra. It circles its star pretty ...

Sky This Week is brought to you in part by Celestron. Friday, April 24Venus passes 0.8° due north of Uranus at 1 A.M. EDT.

NASA's Transiting Exoplanet Survey Satellite has been searching for exoplanets since its launch in 2018, and it turns out it ...