Add Yahoo as a preferred source to see more of our stories on Google. NBC News' Gadi Schwartz reports on "3I/ATLAS," mysterious outer space object that is thought to be billions of years old, making ...

The universe is getting ready to show us a rare, shadowless view of the deep unknown. Earth, the sun, and the mysterious ...

The interstellar comet 3I/ATLAS arrived looking like a routine icy visitor and then promptly started shredding the rulebook ...

A new image of the interstellar object 3I/ATLAS released by NASA has raised questions among astronomers and could change ...

NASA's SPHEREx and Hubble find mysterious 3I/ATLAS behaving strangely after perihelion. The interstellar visitor's 'mini-jets ...

Harvard astrophysicist Avi Loeb joins "ChicagoLIVE" with the latest update on 3I/ATLAS, the mysterious interstellar object ...

Harvard expert Avi Loeb claims the 3I/ATLAS comet's path is 'suspiciously' precise, sparking alien theories. NASA reveals the ...

New polarimetry data on interstellar comet 3I/ATLAS reveals bizarre refractory dust, proving this alien visitor formed in a ...

The mysterious interstellar comet 3I/ATLAS is making its closest approach to Earth on Friday, offering scientists a rare opportunity to study an object born around another star. Space agencies are ...

The comet, discovered in July 2025, originated far beyond our Solar System and is thought to be around 7 billion years old - ...

The CIA told Greenewald in a formal response to his FOIA that it will “neither confirm nor deny the existence or nonexistence ...