When people speak of the northern lights, they are typically referring to Earth’s spectacular display of aurora borealis: ...

Amazing views of Jupiter over the years via the Hubble Space Telescope. The moons of Io, Ganymede and hazy Uranus can be ...

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

"I don't think anyone's made this connection between the surface fluid pattern and the interior properties of these planets." ...

Baby stars, teenage planets, and disappearing icebergs are all featured this week. Plus, a look back at a New Horizons image ...

The interstellar visitor may still have a few things to tell us before it leaves our solar system.

NASA’s Hubble Space Telescope captures visible and infrared images of protoplanetary disks, showing gas and dust structures ...

Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf ...

"Stars like the sun don’t just stop shining for no reason." ...

Sky Shorts author says Orion a favorite constellation, and shares key details to find and appreciate its beauty.

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction.