What if the most profound moment in human history isn't an invasion, but a quiet fly-by? An object from deep space is ...

The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How different will it look when it reappears on the other side?

When it was discovered, the interstellar comet was whizzing at about 137,000 miles per hour ... named 3I/ATLAS, was later confirmed to have interstellar origins after follow-up observations. Simple.

3I/ATLAS was discovered on July 1 barreling toward the sun at more than 130,000 mph (210,000 km/h), and was confirmed to be an interstellar object less than 24 hours later. Initial observations ...

While the comet poses no threat to the Earth, its uniquely positioned trajectory and origin have caught the attention of ...

"It could represent some of the oldest and most pristine water ever observed, formed in another planetary system and preserved throughout its interstellar journey." A team of scientists has found the ...

A busy week on the Space Coast saw two rockets launch within hours of one another as both SpaceX and United Launch Alliance had missions to proliferate a pair of competing satellite constellations.