For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

Astronomers say a distant, sunlike star shows signs of a catastrophic planet-on-planet crash that may mirror the ancient impact that formed Earth's moon. When you purchase through links on our site, ...

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder to detect.

When it comes to the space sciences, nothing is quite as exciting as the search for alien life, and NASA thinks it has a good idea of where to look.

A study by Johns Hopkins University has found that alien microbes could travel between planets on asteroids, meaning humans could be descended from Martians. Astrobiologists have long speculated that ...

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

A new study shows that stars with low magnetic activity are likely to support exoplanetary systems, making the hunt for these ...

E.T. could be phoning home — but we’re not hearing the call. A new study published in The Astrophysical Journal argues that “space weather” could be distorting incoming transmissions from ...

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

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

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