Astronomers have discovered something that shouldn't exist: a galaxy so jam-packed with stars that they smash into each other about once a month.

Solar flares heat ions much more strongly than electrons. The finding offers a new explanation for spectral line broadening. Recent work from the Andrews suggests that particles in solar flares can ...

A successful builder by day and traversing the sky by night, Isaac Roberts took the first clear photograph of Andromeda, the ...

AP photographer Dmitri Lovetsky had been trying to photograph a plane flying across the disk of the sun for several days.

Naval Postgraduate School students participate in the last class ever to operate FLTSATCOM. For more than 30 years, it has ...

Long before galaxies sparkled in the sky or stars took shape, invisible forces stirred in the early Universe. One of those ...

Hey everyone! So, I’ve been keeping up with all the latest from NASA, and there’s a lot going on. From amazing new telescope ...

The dwarf planet Pluto and its five known natural satellites (Charon, Styx, Nix, Kerberos, and Hydra) may be frigid, but ...

Ten years ago, astronomers made an epic discovery with the Laser Interferometer Gravitational-Wave Observatory. Cosmology ...

The world's greatest space telescopes have all been round. Now, a new rectangular design could turbocharge our search for ...

The images of Comet 3I/ATLAS were captured by the Gemini South telescope at Cerro Pachón in Chile on Aug. 27 as the icy ...

Over the course of more than two decades, researchers at the University of Bern have developed the so-called "Bern model," a ...