With the most advanced craft available at the moment, the time needed to reach this planet will be 194,000 years ...

U.S. team of researchers detected signs of two chemicals in the planet's atmosphere long considered to be "biosignatures" ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

Astronomers have found the clearest evidence yet that life might exist beyond the solar system, from the atmosphere of a planet 124 light ... and is so far away from Earth that a spaceship would ...