The remarkable photographs captured in space by astronauts on board orbiting space shuttles and the International Space ...

The discovery was made on a massive exoplanet known as K2-18b that for years has captivated scientists searching for life ...

"This could be the tipping point, where suddenly the fundamental question of whether we're alone in the universe is one we're ...

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