With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

Across the Milky Way and beyond, planetary systems appear to fall into a few recurring blueprints, and recent exoplanet ...

The year 2025 marked significant advancements in exoplanet science, revealing new discoveries and fresh perspectives on known ...

Benjamin Barakat’s award-winning astrophotograph reveals Socotra’s surreal bottle tree beneath a pristine Milky Way ...

But the Big Bang theory predicts that about 5% of the universe's contents should be atoms made of protons, neutrons and ...

The final full moon of 2025 passed already, but the new year has plenty of spectacular moons coming up. Here's when to view ...

A Carnegie-led team of astronomers detected the strongest evidence yet of an atmosphere around a rocky planet beyond our ...

A newly discovered exoplanet has to take the crown for the weirdest world we've ever spotted out there in the Milky Way ...

Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

What's the size of the Milky Way galaxy? Learn how, depending on your definition, the size can change.

A single photograph taken from orbit has managed to make a rare visual connection between the mundane life on Earth and the ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown.