SETI

Latest about SETI

The Five-hundred-meter Aperture Spherical radio Telescope (FAST) in southwest China's Guizhou Province.

Is it time to send another message to intelligent aliens? Some scientists think so.

By Stephanie Pappas published

Scientists have crafted a new message for intelligent extraterrestrials

Search for Life
The Kardashev scale classes a civilization with a Dyson sphere to harvest its sun's light as type II.

The Kardashev scale: Classifying alien civilizations

By Meghan Bartels last updated

The Kardashev scale classifies hypothetical alien civilizations by how much energy they use.

Search for Life
This artist's impression shows a view of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system.

Why are we still searching for intelligent alien life?

By Paul Sutter last updated

Humans have scanned and searched the heavens for signs of other advanced civilizations in the universe. And we've found nothing. Absolutely nothing. Maybe we shouldn't focus on intelligent life.

Search for Life
illustration of an earth-like planet orbited by a moon with a star in the background

NASA needs a new telescope, ASAP, to find Earth's twin

By Nicoletta Lanese published

The National Academies of Sciences, Engineering, and Medicine say that finding Earth-like worlds should be a priority.

Exoplanets
Are we listening in vain?

SETI: Why extraterrestrial intelligence is more likely to be artificial than biological

By Martin Rees published

Is there intelligent life elsewhere in the universe?

Search for Life
A still from a U.S. Navy video of a UFO sighting.

The new reality of UFOs: An interview with journalist Leslie Kean

By Leonard David published

Space.com recently caught up with author and journalist Leslie Kean to discuss UFOs and where research into the puzzling objects is heading.

Search for Life
Sunrise seen over Earth.

Could microbes communicate with alien species?

By Predrag Slijepcevic, Nalin Chandra Wickramasinghe published

Are we alone in the universe?

Search for Life
Jupiter's ocean-harboring moon, Europa, imaged here by NASA's Galileo spacecraft, is widely regarded as one of the solar system's best bets to host alien life.

The search for alien life

By Mike Wall last updated

Here's a look at where the hunt for aliens has been and where it's headed.

Search for Life
Close up of star

Some of the universe's stars have gone missing. But where did they go?

By Giles Sparrow, All About Space magazine published

Space Mysteries: An international team of astronomers is on the hunt for objects that should be impossible.

Stars
The Library of the Great Silence will feature artifacts of transition, like this handaxe.

'Library of the Great Silence' invites E.T. to share long-term survival strategies

By Mike Wall published

Intelligent aliens will soon have a space here on Earth where they can share how they made it through their technological adolescence.

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