Astronomers have been baffled for decades by a cosmic deficit: the Milky Way’s calculated entourage of satellite galaxies is ...

If you live in the Northern Hemisphere and look up during July evenings, you'll see the brilliant star Vega shining overhead.

In the quest for advanced civilizations, the universe is not often very forthcoming with its answers. But the recent suggestion by Harvard astrophysicist Avi Loeb has set astrophysics and SETI ...

It takes a supercomputer weeks to output the properties of one stellar binary. A new study shows AI can do it in a fraction ...

The moon's thin atmosphere, called an exosphere, has been a puzzle to science for some time. Two main processes were thought ...

Understanding the interaction between light and matter at the smallest scales (angstrom scale) is essential for advancing ...

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda ...

Scientists are racing to learn as much as possible about the interstellar comet 3I/ATLAS before it fades from view forever ...

NASA’s Roman Space Telescope is set to embark on a deep-sky survey that could capture nearly 100,000 cosmic explosions, ...

The largest black hole collision ever recorded has scientists' jaws on the floor — and scratching their heads.

Roman’s deep, time-lapse survey may reveal a hundred thousand stellar cataclysms, from distant Type Ia supernovae to the self ...