Even as NASA's Mars helicopter Ingenuity has captured the imagination with flight after flight on the Red Planet, the chopper's rover companion has been hard at work doing science.
Robots may have to dig relatively deep on Jupiter's ocean moon Europa to have a shot of finding signs of alien life, a new study suggests.
The methane wafting from Enceladus may be a sign that life teems in the Saturn moon's subsurface sea, a new study reports.
One of the main parachutes of the European ExoMars rover has suffered damage during the latest high altitude drop test, which took place a little over a year before the mission's scheduled launch.
Scientists now seem to understand why the gas has been detected at ground level on Mars but not higher up in the air.
The release of the U.S. government's highly anticipated UFO report has whipped up a blend of reactions, from UFO groups to individuals in military, academic and scientific circles.
Life in the clouds of Venus is impossible due to the extremely low amount of water despite last year's findings suggesting the presence of organic material.
Much more liquid water may lie beneath Mars' south pole than scientists had thought — or there may be something going on down there that they don't fully understand.
The US military has released previously classified photos and films related to unidentified flying object (UFO) sightings, which mostly show something blurry moving strangely.
The U.S. government is set to release a UFO report soon, perhaps sometime this week. What will it say?
NASA's Perseverance Mars rover has kicked off its highly anticipated science campaign with a Red Planet road trip.
NASA chief Bill Nelson told CNN that he has asked agency researchers to look into the spate of UFO sightings that U.S. Navy pilots have reported over the past two decades.
U.S. lawmakers called for an official assessment of UFO sightings in December, and the six-month deadline is up.
NASA's Perseverance rover and Ingenuity helicopter have now called the Red Planet home for 100 Martian days.
A clip of a mysterious spherical object hovers over the horizon, in footage released by a filmmaker who produces UFO documentaries.