Located 163 light-years from Earth, a Jupiter-sized exoplanet named WASP-69b offers astrophysicists a window into the dynamic ...

Data from the James Webb Space Telescope (JWST) has shown that exoplanet K2-18b has some of the chemical markers that may ...

There's evidence that there was once an ocean's worth of water on Venus. So what happened to the water that once made Venus so Earth-like?

You heard it from your parents. You’ve seen it printed in bold on telescopes. “Do not look at the Sun!” But how can you resist observing the fiery ball of furious fusion that dominates the sky?

It took a few attempts, but JWST has finally found strong evidence of an atmosphere around a rocky world outside our solar system. To add to the intrigue, this isn’t the planet’s original atmosphere — ...

A newly released study of unusual asteroid orbits strengthens the case for the hypothesized distant, massive Planet Nine.

A newly released study of unusual asteroid orbits strengthens the case for the hypothesized distant, massive Planet Nine.

If the JWST can see galaxies billions of light-years away, why can’t it find the proposed Planet X in our solar system?

This pair of objects were the subject of a controversy that threatened to undermine our basic understanding of cosmic ...

The Moon moves down an early-morning line of planets while Eta Aquariid meteors streak through the sky this week.

The evening sky loses its last planet early in May, shifting the attention of planetary observers to the morning.

The spiders on Mars form during the planet's springtime when temperatures rise and rays of sunlight touch the ice layers of ...