Colors of the Moon
What color is the Moon? It depends on the night. Outside of the Earth’s atmosphere, the dark Moon, […]
Science
Ice Halos by Moonlight
An almost full moon on April 15 brought these luminous apparitions to a northern spring night over Alberta […]
The Milky Way s Black Hole
There’s a black hole at the center of the Milky Way. Stars are observed to orbit a very […]
The Milky Way’s Black Hole Comes to Light by Dennis ...
The Event Horizon Telescope has once again caught sight of the “unseeable.” Published: May 12, 2022 at 02:00AM […]
Young Stars of NGC 346
The massive stars of NGC 346 are short lived, but very energetic. The star cluster is embedded in […]
Gravity s Grin
Albert Einstein’s general theory of relativity, published over 100 years ago, predicted the phenomenon of gravitational lensing. And […]
NGC 6334: The Cats Paw Nebula
Nebulas are perhaps as famous for being identified with familiar shapes as perhaps cats are for getting into […]
A Martian Eclipse: Phobos Crosses the Sun
What’s that passing in front of the Sun? It looks like a moon, but it can’t be Earth’s […]
Spiral Galaxy NGC 1512: The Inner Rings
Most galaxies don’t have any rings — why does this galaxy have two? To begin, the bright band […]
Firefall by Moonlight
On certain dates in February, an elusive firefall can be spotted at sunset in Yosemite National Park, when […]