Astronomers have spotted a planet orbiting a star in our neighborhood of the Milky Way galaxy that presents a unique ...

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder to detect.

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from a European Space Agency orbiter on its way ...

Scientists identify exoplanet candidate HD 137010 b, a possible Earth-size world orbiting a Sun-like star 146 light-years away ...

In the spring of 1967, a series of unusual sightings began to grip the Soviet Union. From the rural landscapes of Ukraine to the robust Caucasus Mountains, thousands of citizens reported seeing ...

On February 23, 1990, NASA's Pioneer 11 spacecraft left the solar system! This was the second spacecraft to travel beyond the planetary part of our solar system, which ends at Neptune's orbit. An ...

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens — with screensavers.

Astroscale’s Provisioner refueling vehicle was tested last year at NASA Goddard Space Flight Center. The purple piece is the OrbitFab GRIP interface. Credit: Astroscale U.S. WASHINGTON — As it plans ...

One obstacle to figuring out why, exactly, parts of the American government have developed a strange fascination with “unidentified aerial phenomena” and “nonhuman intelligence” — in lay terms, ...

President Donald Trump has been accused of calling for the release of government files associated with aliens to distract the American public from the scandal arising from the release of files ...