A NASA astronaut and two record-setting Russian cosmonauts are set to head back to Earth on Monday (Sept. 23), and you can ...

Right now, south of the equator, amateur astronomers are watching a comet that's just emerged from behind the sun. Soon, it ...

Astronomers and sky watchers have their fingers crossed that an approaching comet could put on a nighttime show on Earth next month, but it’s already strutting its stuff for those in space.

Comet Tsuchinshan-ATLAS originated from the Oort Cloud, a bubble of ice and dust that surrounds our solar system. It was ...

A video filmed by NASA astronaut Matthew Dominick shows a rare glimpse of Comet Tsuchinshan-ATLAS as seen from the International Space Station.

Unistellar, a pioneer in intelligent telescopes, is once again mobilizing its entire community for a participatory ...

The final hurdle for Tsuchinshan-ATLAS to surmount will come on the afternoon of Sept. 27, when it arrives at perihelion — the closest point in its orbit to the sun.

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.

The big attractions of our column today are a small eclipse of an especially big harvest moon Tuesday night and the arrival ...

On the National Peanut Day, the National Aeronautics and Space Administration (NASA) released pictures and video of Asteroid ...

The crew pulled off the first private spacewalk on Thursday while orbiting nearly 460 miles above Earth, higher than the International Space Station and Hubble Space Telescope. Their spacecraft hit a ...