At perigee – that's the closest point in its trajectory to Earth – 3I/ATLAS will be around 270 million kilometers (168 ...

This interstellar vagabond is only the third large interstellar visitor that we have ever discovered — an asteroid or comet ...

The interstellar comet 3I/ATLAS is making its closest approach to Earth on Dec. 19. Learn about the 'reconnaissance mission' ...

NASA ’s James Webb Space Telescope has found the strongest evidence yet that a small, rocky planet outside our solar system ...

Filmmakers behind 'Stranger Things,' 'Alien: Earth,' 'Task' and 'Hacks' took part in the day of conversations at the DGA. In ...

Over a month after its perihelion, or closest pass of the Sun, observations still clearly show 3I/ATLAS' "anti-tail." ...

A new glass sponge species is so strange that has been given the name named Advhena magnifica, which means "magnificent alien ...

Say you want to listen in on a group of super-intelligent aliens whose language you don't understand, and whose spaceship ...

In a year full of standout shows, io9 picks the very best genre stories to hit the small screen. io9 watched a lot of TV this ...

The comet will come much closer to Jupiter in March, zipping within 33 million miles. It will be the mid-2030s before it ...

Scientists searched 27 exoplanets for alien technology using planetary eclipses, revealing a new way SETI hunts signals ...

SETI scientists observing a pulsar’s radio pulses over time are redefining how astronomers time pulsars and search for ...