An instrument on board the International Space Station is painting the night skies with X-ray observations of the universe around us — and producing a stunning image in the process.
At the very largest scales — zooming out from solar systems, stellar clusters and even galaxies — a surprising pattern emerges in nature.
Curiosity craned its neck skyward on May 7 and May 12, capturing gorgeous imagery of wispy clouds scudding through Mars' thin atmosphere.
Fresh observations of Comet 46P/Wirtanen, which swung by Earth in December 2018, suggest that more of Earth's water came from comets than previous studies suggested.
Astronomers have used a desert-based observatory to identify an exoplanet that falls in the middle of what scientists had dubbed the Neptunian Desert.
One hundred years ago today, in the wake of the first World War, a British astronomer watched a solar eclipse for signs that a German physicist may have been right about warps in the universe.
A dancer gliding across a stage was so well synced with the projection around him that the performer appeared to trigger ripples coursing through the fabric of space-time.
Scientists scouring old Kepler Space Telescope data have tracked down 18 more relatively small exoplanets imaged by the famed planet-hunting observatory.
Scientists have found a new way that future Mars explorers could potentially generate their own oxygen while visiting the planet.
Astronomers may have spotted a distant star spitting out a giant flare that packed 100,000 times more energy than any seen from Earth's sun, a new study finds.
A new photograph from the Hubble Space Telescope shows the spectacular consequences when two galaxies collide.
Neptune's largest moon Triton boasts a unique icy mixture of carbon monoxide and nitrogen, which could help astronomers better understand the conditions of other distant, alien worlds.
Martian sand dunes are blowing in the wind — but slowly, and based on factors that don't affect sand movement here on Earth.