Magazine | Page 209 of 278 | Astronomy.com

Great shots from modern Greece

Why does a space shuttle rotate shortly after launch?

Astronomers say our galaxy hasn’t seen a supernova in 400 years. Why don’t they count the 1987 supernova?

Finding your way through our colorful galaxy

Stephen James O’Meara’s secret sky: Defect or discovery?

Ask Astro web extra: Ever wonder why Mars is red?

Bob Berman’s strange universe: Plenty of nothing

Observing, Telescopes and Equipment

Observing basics web extra: Sensible housing for your telescope

As the Sun set one evening, I observed a sword-like column of light pointing straight up from the horizon. What was it?

Astronomers have estimated star diameters from their colors and brightnesses, but modern interferometers can measure them directly. How do the two methods compare?

Observing, Science

Phil Harrington’s binocular universe: It’s a Wonderful Star

See extremophiles on Earth