Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures ...

Beyond that, in the decades to come, we might be able to see the colours of an exoplanet’s surface, and determine if plant life might be present there. And then we can search for changes in a planet’s ...

Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of ...

Scientists identify exoplanet candidate HD 137010 b, a possible Earth-size world orbiting a Sun-like star 146 light-years away ...

If you examine our solar system’s giant planets, you’ll notice right away that they’ve all got moons—a lot of moons. While ...

Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

Scientists in southern Spain are building next-generation telescopes to scan thousands of stars for signs of alien life.

Astronomers used the VLA and MeerKAT radio telescopes to search the Hycean exoplanet K2-18b for alien technosignatures, analyzing millions of signals but finding no confirmed artificial radio transmis ...

If our Moon suddenly vanished, Earth would already face dramatic consequences. But replacing it with entire alien worlds ...

Red dwarfs make up the vast majority of stars in the galaxy. Such ubiquity means they host the majority of rocky exoplanets we’ve found so far – which in turn makes them interesting for ...

Castlewood Canyon State Park in Franktown, Colorado is one of those places that makes you do a double-take and wonder if someone forgot to tell you that Colorado secretly contains portals to Mars.

Here’s the deal: you live in Virginia, which means you have access to one of the most spectacular underground attractions on ...