President Trump launched the Artemis program to return U.S. astronauts to the moon for the first time since Apollo. Now, the ...

Scientists observed constant flares from the Milky Way's black hole, revealing unpredictable and intense activity.

The billionaire’s people have marched into the Federal Aviation Administration, and Europeans are “freaking out.” ...

President Donald Trump on Wednesday called Volodymyr Zelenskyy a “dictator without elections,” lashing out after the ...

The risk that an increasingly ominous asteroid dubbed 2024 YR4 will crash into Earth in seven years now exceeds the the ...

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

Updates on Asteroid 2024 YR4 have been slower during the full Moon, but experts say the precision of the object’s orbit is ...

The YR4 spans 100 meters and its impact would be comparable to eight million tons of dynamite.

NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

A technique called sonification allows new discoveries, brings out subtleties in dense data, and makes astronomy more accessible.

As the annual high-level Munich Security Conference gets underway, the Russia-Ukraine war is dominating the agenda, and we speak to two guests protesting the conference. Economist, progressive leader ...

It measures 130 to 300 feet across, a pebble compared to the asteroid that killed the dinosaurs, which is estimated to have ...