A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda ...

The Andromeda galaxy is the galaxy next door, a very faint, fuzzy thing in the night sky, larger than a full moon. Textbooks ...

When I was in grade school I was fascinated by the world’s largest telescope: the 200-inch-diameter Hale Reflector on California’s Palomar Mountain. What a behemoth! At the time I enjoyed ...

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system ...

How does a 15-kilometer-wide comet, moving at 152,000 miles per hour, slip into our solar system undetected until a global network of robotic telescopes raises the alarm? The latest detection of ...

When I was in grade school I was fascinated by the world’s largest telescope: the 200-inch-diameter Hale Reflector on Palomar Mountain near San Diego. What a behemoth! At the time I enjoyed ...

Object Details maker Connell, Will Description (Brief) Gelatin silver print of Will Connell's 'Hale Telescope - Palomar," an image of a man operating a large telescope in an observatory. The telescope ...

Purgathofer-Weinberger 1, a faint planetary nebula about 1,300 light-years away, is the second-largest planetary nebula in ...

Caption the Palomar 48 inch telescope at the Palomar Observatory in California with an image of the Milky Way in the background. The stars represent the number of supernovae discovered in each ...

Astromers were astonished by the SIT's very high sensitivity on its first use on the 200 inch Mt. Palomar telescope. The tape that accompanies this artifact is a record of that image in digital form.