Expert Voices - Opinion and Insights on Space and Tech

The dream of a human habitat in orbit about the moon came a step closer on September 27, when NASA and the Russian space agency (Roscosmos) signed up to a common vision for future human exploration.

Will we someday colonize space? Will our children visit other planets? To achieve goals like these, we’ll need to crack one crucial challenge: how to feed ourselves for long periods away from Earth.

It has been 60 years since the Soviet Union launched Sputnik 1, Earth's first artificial satellite.

Former NASA astronaut Leroy Chiao may have commanded a real-life space station, but "Star Trek" gave him an early push.

Farewell, Cassini, and thank you.

The future of America's space program depends on all Americans helping the residents of Houston.

During my first spaceflight aboard Space Shuttle Columbia, I watched, incredulous, as Hurricane Emilia churned as a Category 5 storm.

I think it's time for everyone to admit that black holes are annoying.

Albert Einstein's theory of general relativity suggests backward time travel is possible in some scenarios, but do those situations ever exist in our universe?

How do scientists know there's a mysterious substance called "dark matter" that dominates our universe? An astrophysicist explains.

The Sun Is Literally Boiling, Releasing Balls of 'Hot Horror' Into Space

During the total solar eclipse, skywatchers can see the corona: the hellish, mysterious outer atmosphere that NASA plans to probe in 2018.

During my mission aboard the International Space Station (ISS), I shot what I was told was the first astronaut video of a partial eclipse.