Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

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

By mid century, the familiar constellations that guided sailors and storytellers could be drowned in a permanent artificial ...

Finding new worlds out there is pretty exciting, right? Scientists are getting really good at spotting planets around other ...

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

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

One of the most stubborn issues in cosmology today concerns the universe's rate of expansion. Scientists know it's expanding, ...

The Square Kilometer Array will have its first light next year, and the Extremely Large Telescope will be completed and ...