Leonard David

The object blasted out of the sky over the Yukon on Feb. 11 may have been an amateur radio pico balloon — specifically, a 33-inch-wide one called K9YO-15.

What do these sky-high visitations mean, if anything, to the UFO/UAP community? Are there any lessons to be learned from these incidents?

A new National Geographic docuseries by investigative journalist Leslie Kean aims to shed light on the modern UFO phenomenon.

Analysis of space junk that has fallen to Earth could help researchers design rockets and spacecraft that break up more completely during the reentry process.

The coming year will surely see a persistence of debate, discussion and disbelief regarding unidentified anomalous phenomena.

Space.com caught up with Tim Dodd in an exclusive interview to discuss his 'Everyday Astronaut' status and how he's preparing himself for his citizen voyage to the moon and back.

Space mining has matured to the point where there are dozens of startup companies planning to begin harvesting valuable resources from space.

Solar sailing can be a relatively slow-motion affair, but progress in the nascent field is quickly gaining steam.

China's last space launch of 2022, which lifted off on Thursday (Dec. 29), has prompted a warning of falling rocket debris from the Philippine Space Agency.

Nuclear fusion has broad implications, fueling hopes of clean, limitless energy and the long-held dream of future rockets that are driven by nuclear propulsion.

China may end up enlarging its Tiangong space station and perhaps use it to evaluate technologies needed for possible human exploration of the moon.

NASA has built a new rocket and spacecraft to get Artemis astronauts to the moon, and it's developing a new toolkit for them to use on the lunar surface as well.

UFOs are making headlines again, but lost in the hype and ruckus is the question of when this all started and how we got to this point.

The crewmembers of the Polaris Dawn mission are busily training for their orbital flight early next year, one that will see the first commercial spacewalk.

As multiple nations plot out their moon exploration strategies, how best to survive the lunar night gives space engineers the cold sweats.

The U.S. military's X-37B robotic space plane just passed 900 days in orbit on its latest hush-hush mission, adding to the program's flight-duration record.

It's important to start taking action against space junk now, experts say, because Earth orbit is only going to get more congested.

The Long March 5B rocket expected to launch China's Mengtian module on Oct. 31 will likely fall back to Earth uncontrolled a week or so later.

Touching safely down on Mars is a true, nail biting event. Landing securely on Mars remains a delicate balance of technical skill, mixed in with hard-earned luck.

The knowledge that we're not alone in the universe could have far-reaching effects on our view of ourselves and our place in the universe. But it's tough to get more specific than that.

Space life scientists are pushing for the development of an international database on long-term health effects of spaceflight.

Russia's reactivation of lunar exploration via its robotic Luna 25 lander has slipped to 2023.

Researchers are working to come up with ways to mitigate the space junk problem, one of which would use fabrication concepts to reduce the size of debris pieces that make it to Earth.

Given all of the planned international lunar activity, emergencies could happen that will call for the unconstrained mobilization of all possible aids.

The huge, bowl-shaped Meteor Crater in Arizona that was formed some 50,000 years ago continues to yield new information, surprisingly so.