Astronomers have long struggled with a troubling puzzle: a significant portion of normal matter in the universe appeared to ...

A distant galaxy that lay quiet for decades has suddenly stirred, lighting up in dramatic bursts that have caught astronomers ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

Most people know that black holes are kind of scary. Admittedly, that's true, but black holes are so much more than that.

If dark matter is creating positrons in the CMZ, those particles will eventually slow down and eventually annihilate with electrons in the environment, producing gamma-rays at exactly 511keV energy.

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

The potential discovery of life elsewhere is down to the unprecedented sensitivity of Nasa's James Webb Space Telescope.

Q: If the gravity of a black hole is so strong that nothing can escape from it, not even light, how has the Hubble Space Telescope recorded images of gas jets ejected from black holes?

Whether you call it a trimmer, a weed whacker, or a weed eater, these precision lawn tools give your grass nice, crisp edges.

Our ancestors learned to control fire roughly 1.8 million years ago. A lot has changed since then, but the utility of fire ...

SOFIA, April 15 (Reuters) - Shell (SHEL.L), opens new tab signed a contract with Bulgaria's government on Tuesday giving the oil major rights to explore for oil and gas in a field in the Black Sea.