A strange object found in the desert has prompted worldwide speculation.
A new study discovers the likelihood of extraterrestrial life in the universe.
A leading British space scientist thinks there is life under the ice sheets of Europa.
There are several ways alien life could travel across space, scientists say.
Greatest job ever? NASA will pay six-figures to a Planetary Protection Officer.
New research on Uranus' magnetosphere could help scientists learn about distant systems, and refine the ways they search for alien life.
Everyone loves Europa, says Neil deGrasse Tyson. Why? It's a strong bet for finding life in our solar system, and it's even more amazing because it breaks all the rules.
NASA scientists discover what two places in the solar system might have favorable conditions for alien life.
Harvard scientists propose how mysterious Fast Radio Bursts from outer space could actually be powering the spacecrafts of an advanced alien civilization.
Neil deGrasse Tyson and others consider whether alien diseases have the potential to wipe out humanity and maybe already have in the past.