A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

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

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

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It was inferred to have a disk-like shape and to exhibit non-gravitational acceleration, raising the possibility of an ...

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from ...

A new object that is believed to be from beyond the solar system has been seen by scientists, according to astronomers. It ...

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

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

A mysterious interstellar object is racing towards our solar system at approximately 150,000 miles per hour, with astronomers ...

Third-ever confirmed visitor, dubbed 3I/Atlas and hurtling at 60 kilometers per second after likely being formed in distant ...

Using a powerful telescope in Hawaii , the European Space Agency (ESA) has now captured the first video of 3I/ATLAS as it makes its journey through space.