The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a conjunction) in the predawn sky.

Valleys on Mars suggest the Red Planet was once covered in flowing water — but it's still a mystery how that could have been.

Super-Earths can exist in wider orbits around their parent stars than was previously believed, suggesting these Earth-like exoplanets could be more common than we thought.

For the first time, scientists have identified climate change as the top driver of human-caused biodiversity loss among species protected under the Endangered Species Act.

A powerful new instrument added to the Daniel K. Inouye Solar Telescope promises to maximize the information gleaned from the sun's light.

Scientists have long known that Saturn's largest moon, Titan, hosts rivers and seas of liquid methane. But it's strangely lacking in river deltas, a new study suggests.

Using the James Webb Space Telescope, astronomers have discovered "smoking gun" evidence of a hidden feeding supermassive black hole in a distant spiral galaxy.

NASA's Lucy spacecraft, currently journeying toward Jupiter's orbit on its asteroid-hopping mission, captured an impressive close-up of its second target: the main belt asteroid 52246 Donaldjohanson.

Astronomers discovered a planet that orbits its star so closely that its surface is being scorched into magma and vaporizing into space.