In one of the most baffling discoveries of the last decade, scientists have found a clue in a cave to how life might survive ...

January brought a wide range of thoughtful science conversations featuring researchers from the SETI Institute, spanning everything from hands-on planetary defense with citizen scientists to careful ...

Scientists may need to broaden their horizons in their search for alien life.

Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible ...

Jupiter’s moon Europa is one of the most hostile environments in the solar system, blasted by radiation strong enough to kill a human in hours. Yet beneath its frozen surface may lie a saltwater ocean ...

When people imagine aliens, they usually picture biological creatures similar to life on Earth. But many scientists argue ...

For many years, astronomers have been looking for extraterrestrial life. In doing so, astronomers have narrowed their search to a small “habitable zone” around stars.

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...

A "crowdsourced" project in which home computer users were enlisted to help analyze radio signals from space is ending after more than two decades.

In 1995, a pair of scientists discovered a planet outside our solar system orbiting a solar-type star. Since that finding—which won the scientists a portion of the 2019 Nobel Prize in ...