Lasers enable the U.S. Navy to fight at the speed of light. Armed with artificial intelligence (AI), ship defensive laser ...

Astronomers have discovered that many infant stars born in stellar nurseries of the early universe may have preferred "fluffy" stellar blankets.

The likelihood of 2024 YR4 colliding with the our planet in 2032 have ticked up to over 3 percent. Is it time to start ...

A recent study has unveiled how chemical elements and powerful winds shape the atmosphere of a planet far beyond our solar system.

Stargazers in parts of the U.S. have a fleeting opportunity this month to catch a rare celestial phenomena—a "parade" of ...

Researchers have found that stars in the early universe may have formed from 'fluffy' molecular clouds. Using the ALMA telescope to observe the Small Magellanic Cloud -- whose environment is similar ...

Two weeks ago, when Ars first wrote about the asteroid, designated 2024 YR4, NASA's Center for Near Earth Object Studies ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

Experts Stunned After Witnessing Rare Phenomenon Known as the 'Einstein Ring' Captured by a Space Telescope Countless cosmic ...

NASA announced Wednesday that the odds of the up to 300-foot-wide asteroid hitting Earth dropped from record highs. See where ...

The Sun periodically ejects huge bubbles of plasma from its surface that contain an intense magnetic field. These events are ...

Stars are born in dense molecular clouds, but did they always form this way? Recent research suggests that in the early ...