A staggering 250,000 kilometers per hour was the speed at which the comet had rushed through the inner solar system near the Sun–a reminder of how extreme velocities set interstellar visitors apart ...

What does it mean when a comet racing at about 130,000 miles per hour shows hydrogen signatures unlike anything seen in our ...

NASA confirms hydrogen detection from 3I/Atlas using MAVEN, providing new clues about the interstellar comet’s makeup.

After the International Space Station is decommissioned, China and possibly Russia will have active space stations in low ...

After a couple of scrubs and a few aggravating holds, the Blue Origin New Glenn finally rocketed into the clear, blue Florida ...

NASA's Perseverance Mars rover recently came across an odd rock, dubbed "Phippsaksla," that is unlike anything else the robot ...

NASA unveiled close-up pictures on Wednesday of the interstellar comet that’s making a quick one-and-done tour of the solar ...

NASA is defending the quality of its newly released HiRISE images of interstellar object 3I/ATLAS after a wave of sharper amateur photographs began circulating online, prompting comparisons that place ...

Mars and Mercury cozy up, the Leonids sparkle, and Saturn’s rings are…disappearing? Mars and Mercury get close for a ...

Rumors of its biological origins have been greatly exaggerated, but comet 3I/ATLAS is still very worth paying attention to.

SpaceX's Starship booster exploded during testing of the new Super Heavy in South Texas early Friday. The incident happened ...

The space agency got a close look at the interstellar visitor over the past few months as it zipped by Mars and the sun ...