Mike Wall

The search for alien life should broaden its horizons a bit, a new study suggests.

The newfound asteroid 2021 PH27 completes one lap around our star every 113 Earth days. That's the shortest orbital period of any known solar system object except the planet Mercury.

The partial breakup of China's Yunhai 1-02 military satellite on March 18 is no longer mysterious.

But don't expect it to actually launch so soon.

Perseverance drilled its first sample-collecting hole on Friday (Aug. 6), but data beamed back to Earth by the rover indicate that no Mars rock or dirt made it into the sampling tube.

The company's Electron rocket launched a small satellite for the U.S. military early Thursday morning (July 29), acing its first mission since a failure in mid-May.

Richard Bransons' flight Sunday (July 11) was just the first of two planned billionaire spaceflights this month. Blue Origin boss Jeff Bezos is scheduled to fly on July 20.

The methane wafting from Enceladus may be a sign that life teems in the Saturn moon's subsurface sea, a new study reports.

Much more liquid water may lie beneath Mars' south pole than scientists had thought — or there may be something going on down there that they don't fully understand.

An enormous, ghostly hand stretches through the depths of space, its wispy fingers pressing against a glowing cloud. It sounds like something out of sci-fi, but it's quite real.

China's first-ever Mars rover was on the move earlier this month, imagery by a NASA spacecraft shows.

Scientists have found the earliest known "storm" generated by a supermassive black hole, a discovery that could shed considerable light on the coevolution of galaxies and their central black holes.

Astronomers may have solved the mystery of Betelgeuse's bizarre brightness drop.

NASA has approved the Near-Earth Object Surveyor space telescope to move into "preliminary design," its next phase of development on the road to a planned liftoff in 2026.

NASA's Mars Reconnaissance Orbiter captured a dramatic image last month of Curiosity ascending Mont Mercou, a landform on the slopes of the Red Planet's 3.4-mile-high (5.5 kilometers) Mt. Sharp.

We could soon start getting answers to some vexing UFO questions.

Intelligent aliens will soon have a space here on Earth where they can share how they made it through their technological adolescence.

For the past five weeks, Perseverance has been focused primarily on supporting and documenting the flights of NASA's Ingenuity helicopter. But the rover has been doing some science work, too.

The 23-ton core stage of a Chinese Long March 5B booster crashed back to Earth Saturday night (May 8), ending 10 controversial days aloft that captured the attention of the world.

Stratolaunch's Roc carrier plane, which is being groomed to haul hypersonic vehicles aloft, conducted its second-ever test flight Thursday morning (April 29).

Ingenuity aced its third-ever Martian flight early Sunday morning (April 25), adding to its already impressive resume.

NASA's history-making Mars helicopter Ingenuity will make its third Red Planet flight this weekend, if all goes according to plan.

NASA's Ingenuity helicopter lifted off on the Red Planet early this morning (April 19), performing the first-ever powered flight on a world beyond Earth.

The 4-lb. (1.8 kilograms) chopper captured its first color photograph on Saturday (April 3), shortly after being lowered to the Martian dirt by the Perseverance rover.

The stainless-steel SN11 didn't stick its landing last week because of a plumbing problem, according to SpaceX founder and CEO Elon Musk.