I Atlas was only the third confirmed interstellar object ever spotted entering our solar system, but it triggered a huge debate because its behavior did not match typical comets. Some researchers ...

Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

It came from outer space. Interstellar space, to be precise. From somewhere beyond the influence of our sun, possibly from ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will soon come as close to our planet as it ever will.

Scientists say the colour shift in interstellar comet 3I/ATLAS is due to gases in the comet's coma reacting to solar heat.

Harvard physicist Avi Loeb challenges NASA, suggesting the iron-rich composition of interstellar object 3I/ATLAS indicates ...

Vladimir Putin jokes that interstellar comet 3I/ATLAS is a 'secret weapon' as the mysterious object sweeps past Earth.

The NASA-funded ATLAS survey telescope in Chile found the comet on July 1. The comet was not visible as it raced behind the ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

A mysterious visitor from beyond our solar system is defying expectations and igniting fierce scientific debate as it hurtles ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...