Multiple research teams are developing missions designed to address Venus' potential as an abode for life.
Reference Area 51 is a U.S. military base that has become synonymous with tales of UFOs, government cover-ups and potentially testing alien technology.
An area of Pluto that researchers think was formed from the eruption of ice volcanoes is unique on the dwarf planet and in the solar system, a new study suggests.
The first whiff that humans catch of life beyond Earth might be methane, but scientists will need to tread carefully before declaring a discovery based on the chemical.
The NASA-ESA campaign to haul Mars samples back to Earth will require two Red Planet landers instead of one. The change will delay the arrival of samples here by two years, to no earlier than 2033.
A circular shape on the seafloor visible on Google Earth is raising cries of "UFO," but chances are … it's not aliens.
In a new study, researchers predict what an alien "Earth" could really look like, and how it could evolve (if one exists).
NASA's top-notch Red Planet geology rover is moving on to explore an ancient river delta now that its eighth rock sample is secured for future analysis.
Planetary debris, including some objects the size of moons, may hint at a rocky exoplanet within the habitable zone of a dead star, a new study suggests.
Perseverance just socked away another Martian rock sample, the seventh that it has collected since landing on the Red Planet in February 2021.
According to new research led by the University of Rochester, the search for extraterrestrial intelligence (SETI) should be broadened to look for signs of "planetary intelligence."
Two dozen so-called superhabitable alien worlds may be as good as or better than Earth for life as we know it.
A new petition calls for the United States government to release to the public all unclassified videos of unidentified flying objects (UFOS).
NASA's Perseverance rover has been on Mars for a full year now, but in some ways the robot is just getting started.
NASA's Perseverance rover has now been exploring Mars for a full year, and it has captured some amazing photos during that stretch.
The Perseverance rover and Ingenuity helicopter are about to celebrate one year on Mars, and NASA wants you to be part of the party.
Lockheed Martin will build the Mars Ascent Vehicle, a small rocket that will launch pristine Red Planet samples back toward Earth a decade or so from now.