As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

Interstellar comet 3I/ATLAS reveals ancient secrets and strange chemistry as the largest object of its kind ever tracked.

Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

Harvard's Avi Loeb argues 3I/ATLAS shows signs of alien technology, from its 0.2% probability flight path to bizarre metal ...

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

Many experts believe that aliens exist in the universe, with the key elements needed to sustain life found on comets, ...

A new study referencing a past NASA Cassini observation found the presence of 'slushy tunnels' in Saturn's largest moon Titan ...

Europa has a vast, saltwater ocean beneath its icy shell, with more than twice the amount of water in all of Earth’s oceans ...

Even though these characters only appeared in a single episode of a "Star Trek" series, they left an unforgettable mark on ...

If nonliving materials can produce rich, organized mixtures of organic molecules, then the traditional signs we use to ...

Fresh orbital images and new geological analysis have revealed eight mysterious caves on Mars that appear unusually well suited to protect traces of life. Together, these caverns, portals and ...