The moon sighting for Zil-Hajj 1446 AH crescent in Saudi Arabia is set for May 27. Meanwhile, the crescent has already been ...

The far northern sky holds its richest region in Cassiopeia, a splendid area of bright Milky Way stars and gas. One of the greatest nebulae in the far north is NGC 7635, the Bubble Nebula, so named ...

A powerful new optics system has captured the clearest view yet of the Sun’s corona, revealing stunning plasma structures.

Journey through the solar system and beyond or discover the epic life cycles of stars this month at the Delta College ...

If he’d pursued his first love, Simon Cherry might be unraveling the mysteries of the universe through astronomy instead of ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

The ninth flight test of SpaceX's Starship megarocket is scheduled for later today, with an hour-long launch window opening ...

Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow ...

“The turbulence in the air severely degrades images of objects in space, like our Sun, seen through our telescopes. But we can correct for that,” Dirk Schmidt, Adaptive Optics Scientist at the ...

Evidence that we live in a spiral galaxy is all around us early in the morning in late spring.

The sun's corona—the outermost layer of its atmosphere, visible only during a total solar eclipse—has long intrigued ...

"The re-entries are really rising quickly. If we stop measuring what is happening in the atmosphere right now, we could be ...