Astronomers announced the discovery of a starless cloud of hydrogen gas, a pristine relic of the cosmos that is almost as old as time itself.

Now, a new Nature study points to an answer by catching four planets at a stage most systems never show us: The awkward, ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

New research tracks young planets around a nearby star, showing how large, gas-rich worlds shrink over time to become the most common planets in the galaxy ...

A new astronomical survey has brought scientists closer to identifying nearby stars that could host Earth-like planets ...

They're called ghost particles for a reason. They're everywhere—trillions of them constantly stream through everything: our ...

Both NASA’s James Webb Space Telescope and Chandra X-ray Observatory caught these two galaxies in a close embrace.

A test model of the Perseverance rover, designed to explore the surface of Mars, sits in a garage at NASA’s Jet Propulsion ...

Across the Milky Way, planets slightly larger than Earth but smaller than Neptune appear around most stars. Yet our own solar ...

Leonardo Testi and team investigate the initial conditions for planet formation in this special astronomy focus ...

Galaxy Girl makes a standout debut on The Masked Singer season 14. Explore the clues, judges’ guesses and fan reactions so ...

Over its planned two-year mission, the $488 million telescope will scan the entire night sky every six months and collect ...