Using Webb’s near-infrared spectrograph, astronomers have captured new images of Neptune that finally reveal the planet’s mysterious auroral activity. Faint hints of Neptune’s auroras were first ...

Venus and Saturn will be in conjunction on April 28, but Saturn will glow only a fraction ... a great photo of any of the planets and would like to share it with Space.com's readers, send your ...

A new X-ray look at the mesmerizing Helix Nebula reveals an alleged planet killer ... which is gradually shedding its outer gas layers into the surrounding space. Stellar radiation causes the gas to ...

A sudden flash of light in 2020 caught the attention of astronomers scanning the sky. That brief signal, spotted by Caltech’s ...

Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.