On July 21, 2020, NASA will conduct its 300th spacewalk since 1965. To mark the occasion, we've gathered together 30 amazing images from some of those outings.

DARPA, the agency responsible for developing technologies for the U.S. military, is building a new high-tech spacecraft that will repair satellites in orbit.

Are America's space assets at risk from enemy hunter-killer satellites? Retired Air Force general Chris Bogdan believes they are. But he's got a solution.

When you think of rocket launches, you probably think of huge companies like Boeing or SpaceX manufacturing massive rockets like the Starship. But one company is taking the opposite approach to launches, making rockets which are smaller, lighter, and more affordable.

Silicon Valley space-tracking startup LeoLabs is using radar to track what's happening in Low Earth Orbit. Here's what technology LeoLabs has developed to help.

The race to populate Mars is on. But before humans can visit the red planet, we need to send out robot scouts to see the lay of the land. The next generation of Martian robotics will use sophisticated AI, novel propulsion methods, and flexible smallsats to meet the challenges of colonizing a new world.

Will the future of space exploration involve swarms of smart robots aiding human pioneers by mining for resources, or even autonomously preparing new locations on other planets for human habitation? California-based startup OffWorld certainly thinks so. Here's what it is working on.

Kessler Syndrome is a scenario in which the density of objects in low Earth orbit is high enough that collisions between objects could cause a cascading effect that ultimately traps humanity beneath a ceiling of space junk. We spoke to the man who coined the term.

Could the same A.I. technology that is used to unlock people’s smartphones also help unlock the potential secrets of the universe? It sounds crazy, but that’s exactly what researchers from ETH Zurich in Switzerland are working to achieve. Here's what they have developed.

The Apollo 11 mission put a man on the moon, but NASA didn’t necessarily preserve every step of the process. Researchers are trying to rescue the history on Earth and on the moon.

Half a century after humans first walked on the moon, there are still people who doubt it happened. Although the internet has connected people around the world to each other and the collective knowledge of humanity, conspiracy theories are not just persisting but thriving on social media.

The Asteroid Mining Corporation, the U.K.'s only company dedicated to the dream of mining resources from asteroids in space, plans to launch a prospecting satellite in 2021. Is its founder going to be among the first people to strike gold in space, or is it a doomed venture?

Ever dreamed of leaving Earth to find employment amongst the stars? Want to know what some of these far-flung space roles might entail? Here are six future jobs that might sound like science fiction now, but almost certainly won’t a decade or two from now.

At NASA’s Cube Quest Challenge, Cornell University’s Cislunar Explorers aim to send its innovative water-powered satellite in orbit around the moon.