NASA’s ATLAS survey telescope found an interstellar comet, which could be the largest yet, in the direction of the ...

Dr. Jonathan McDowell, of Harvard-Smithsonian Center for Astrophysics, has been recording Starlink satellites. Before this launch, McDowell recorded the following: 7,355 are in orbit ...

Harvard-Smithsonian Center for Astrophysics’ Dr. Jonathan McDowell has been tracking Starlink satellites. Before this launch, McDowell recorded the following: 7,563 are in orbit ...

This artist's conception depicts ordinary matter in the warm, thin gas making up the intergalactic medium (IGM)—which has ...

Celestial objects known as dark dwarfs may be hiding at the center of our galaxy and could offer key clues to uncover the ...

Electrons play many roles in solid materials. When they are weakly bound and able to travel—i.e., mobile—they can enable ...