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We may have discovered alien life already but rejected the evidence too quickly because it seemed false at first glance.

Each of our three nearest stars might have an Earth-like planet in orbit around it. Here’s what we’ll learn when we finally observe it.

With JWST, Chandra, and gravitational lensing combined, evidence has emerged for the earliest black hole ever. And wow, is it a surprise!

When the Hubble Space Telescope first launched in 1990, there was so much we didn’t know. Here’s how far we’ve come.

If your computer crashes, it might be due to a star that exploded somewhere in the Universe millions of years ago.

The largest hazardous asteroid found in the last 8 years showcases a little-known class of planet-killers. And we’re woefully unprepared.

Memorial day is a time to remember veterans killed in the line of service. These spaceflight heroes deserve to be remembered, too.

In all the known Universe, Earth is the only planet known to have native life. What should guide us in expanding humanity beyond our world?

NASA is creating a planet habitability index, and Earth may not be at the top. With our current data, ranking habitability is guesswork.

Since 1962, humanity has been sending messages into space with the intent to make contact with intelligent extraterrestrials. Are those efforts worth the risks?

With its first view of a protoplanetary disk around a newly forming star, the JWST reveals how alone individual stellar systems truly are.

Only nine weeks later, the Wright Brothers achieved manned flight. The pathologically cynical always will find a reason to complain.

A recent measurement has simultaneously settled an ongoing scientific debate while puzzling scientists.

On July 12, 2022, NASA will release the first science images taken with the James Webb Space Telescope. Here’s what to hope for.

Astronomer Adam Frank asks: With so many extraordinary claims, why can’t anybody produce the proof?

60% of all potentially dangerous asteroids remain undetected.

Experts believe they could cut the time it takes a rocket to reach Mars by up to 25%, shaving about two months off the trip.

Sooner or later, Earth is going to be hit by a large enough space object to cause significant damage to humanity. Stopping them isn’t easy.

Somewhere out there in the Universe is the heaviest neutron star, and elsewhere lies the lightest black hole. Where’s the line between them?

Finding life beyond our Solar System requires understanding its host planet.

1.9 billion years ago, a star’s explosive death created a black hole. Its light just arrived at Earth. But did it set a cosmic record?

Our Moon is full of craters, basins, and ancient lava flows. But two large lunar Grand Canyons have the same origin: a single, giant impact.

An effect called the “urban heat island” means that temperatures are often 10 degrees higher in cities, according to NASA.

“You’ll be able to fly twice as fast as a Boeing or Airbus, and it’ll be like the cost of flying business today.”

Despite no experimental evidence showing that gravitons exist, they remain a respectable concept in the world of professional physicists.

Recasting the iconic Carrington Event as just one of many superstorms in Earth’s past, scientists reveal the potential for even more massive eruptions from the sun.

Google co-founder Sergey Brin’s airship startup hits a major milestone.

Spin, spin, spin — fire! The startup’s radical system could make satellite launches cheaper and cleaner.

A history of othering, experimentation, and mystery.

Knowing that technology would advance in the future, NASA put some moon rock samples into storage without opening them. Now, they have.