Moonrise Through Mauna Keas Shadow
How can the Moon rise through a mountain? It cannot — what was photographed here is a moonrise […]
Astronomy
Stardust and Starlight in M78
Interstellar dust clouds and bright nebulae abound in the fertile constellation of Orion. One of the brightest, M78, […]
Sharpless 249 and the Jellyfish Nebula
Normally faint and elusive, the Jellyfish Nebula is caught in this alluring telescopic field of view. The entire […]
A February without Sunpots
Where have all the sunspots gone? Last month the total number of spots that crossed our Sun was […]
X Ray Superbubbles in Galaxy NGC 3079
What created these huge galactic superbubbles? Two of these unusual bubbles, each spanning thousands of light-years, were recently […]
Celestial Alignment over Sicilian Shore
This was a sunrise to remember. About a month ago, just before the dawn of the Sun, an […]
The Orion Bullets
Why are bullets of gas shooting out of the Orion Nebula? Nobody is yet sure. First discovered in […]
NGC 6302: The Butterfly Nebula
The bright clusters and nebulae of planet Earth’s night sky are often named for flowers or insects. Though […]
Sharpest Ultima Thule
On January 1, New Horizons swooped to within 3,500 kilometers of the Kuiper Belt world known as Ultima […]
Simulation TNG50: A Galaxy Cluster Forms
How do clusters of galaxies form? Since our universe moves too slowly to watch, faster-moving computer simulations are […]