Space has a reputation for being cold, but the numbers behind that reputation are stranger than most people realize. Some of the most frigid spots ever measured are not tucked away in the distant ...

Discover NASA's latest images of the extraordinary interstellar comet 3I/ATLAS, the third comet from another star entering our solar system.

Viewed from orbit, Jackass Flats — situated in southern Nevada about 65 miles northwest of Las Vegas — could easily be confused for Mars. The alluvial basin is full of tan and gray regolith, hued ...

Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our own solar system? While distant galaxies reveal clear signs of something ...