NASA confirms the arrival of 3I/ATLAS, the third interstellar object. The ATLAS project spotted it in June 2025. Its speed ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

NASA spotted a foreign object, 3I/ATLAS, speeding toward the inner solar system at 135,000 mph. Harvard expert Avi Loeb believes it may be an alien spacecraft. Scientists debate its origin, with NASA ...

A newly discovered object from deep space may be the oldest comet ever observed—possibly more than 7 billion years old, and ...

Kareta says that come October, when the comet gets closer to Earth, "under dark skies ... with a big telescope and some ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen – possibly predating our solar system by more than three billion years, researchers say. The "water ...

New research has revealed everything astronomers currently know about the mysterious interstellar object 3I/ATLAS.

Astronomers tracking an interstellar object flying through the solar system think it comes from a star at least 8 billion ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever encountered.

When the news started to spread on July 1, 2025, about a new object that was spotted from outside our solar system, only the ...