Manhattan-sized comet 3I/ATLAS — which scientists suspect could have extraterrestrial origins — will reach its closest ...

An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

Interstellar comet 3I/ATLAS is passing safely through our solar system. Learn about its discovery, its distant path, and why ...

Rumours claim China exposed NASA's hidden 3I/ATLAS data, but experts say no evidence supports the theory. Here's what really ...

Scientist Avi Loeb has accused NASA of withholding critical information about 3I/ATLAS — the Manhattan-sized interstellar ...

Interstellar comet 3I/ATLAS is making a rare visit to our solar system, reaching perihelion near Mars' orbit on October 30, ...

UPDATE for 11 am ET: NASA's Perseverance rover has discovered sediment formations that could be signs of possible biosignatures on Mars, but they could also have a non-biological source. Read our ...

Astronomers using NASA's Swift telescope detected water on interstellar comet 3I/ATLAS in a surprising location. Discover how ...

Spacecraft have revealed that the comet—which one scientist suggests could be an alien spacecraft—is now "distinctly bluer ...

NASA's chief said recently he's reopening bids for the Artemis III contract that it awarded SpaceX in 2021. SpaceX has now ...

"We've shared and are formally assessing a simplified mission architecture and concept of operations that we believe will ...

Starship, which has launched 11 times in South Texas, was NASA's vehicle of choice to land astronauts on the moon. Now the ...