NASA has discovered CWISE J1249, a mysterious red celestial object moving at over one million miles per hour through the ...

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 ...