When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space. But what if the real danger comes from much smaller, barely detectable ones?

Stunning stellar explosions occur every second across the cosmos – some observable, most too distant to ever know, all of ...

This spring, skywatchers have been treated to the captivating and unpredictable display of a new comet, called C/2025 F2 ...

For decades, many scientists have relied on the "hard steps" model to suggest that intelligent life is rare — the improbable ...

The question “are we alone in the universe?” has fascinated people for centuries. In 1959 two Cornell University physicists described how we might answer that question through interstellar ...

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Interstate 80 eastbound, twenty miles outside of Sacramento. It’s Tuesday, November 20, 1984; a day on which a small part of history will be created. In a folder next to me on the front seat of my ...

If you ever spend a night under the stars watching for meteors and saw something unusual, you may want to meet astronomer Dr. Peter Jenniskens. He’s an expert on meteor showers and author of Meteor ...

Shooting stars are nature’s atmospheric fireworks display. Whether this phenomenon can bring luck or love is open to debate, but the true origin is linked to the story of our Solar System. Meteors are ...

Girls grades K-12 can earn their Space Science badges thanks to “ Reaching for the Stars: NASA Science for Girl Scouts” supported by NASA Science under Cooperative Agreement No. NNX16AB90A to SETI ...

In 1974, the most powerful broadcast ever deliberately beamed into space was made from Puerto Rico. The broadcast formed part of the ceremonies held to mark a major upgrade to the Arecibo Radio ...