Harvard physicist Avi Loeb revealed that the object is expected to approach Earth on December 17, speeding through the solar ...

Astronomers are reporting the detection of a large object entering our solar system, and it is causing quite the stir in the ...

"We would need to consider the possibility that the source was created (or trapped as a primordial black hole) by a highly advanced technological civilization," Harvard's Avi Loeb writes.

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

Compact ruddy galaxies seen by the James Webb telescope confound astronomers. Having very little spin at birth may explain the galaxies’ small sizes.

A new interstellar object has been spotted careening into the solar system at an extremely unusual, hyperbolic trajectory. If ...

The meteor IM1 first caught Loeb’s attention through an obscure NASA fireball database under the code “CNEOS 2014-01-08.” ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system.