The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

New data reveals a 3-million-light-year filament connecting two galaxies, each of which hosts a supermassive black hole.

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

After hundreds of hours of observations, researchers captured a highly detailed image of a long filament of the "cosmic web" ...

Curiosity, a set of NASA 's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying ...

Unexpected epochs of stillness that punctuate the cosmic timeline could offer a natural explanation for dark matter and many ...