Magazine | Page 192 of 278 | Astronomy.com

David H. Levy’s Evening Stars: Living and breathing astronomy

Stephen James O’Meara’s Secret Sky: Test your vision: The perigee Moon

The many shapes of planetary nebulae

Observing, Telescopes and Equipment

Observing Basics web extra: Tales of screw-in solar filters

Bob Berman’s Strange Universe: 2010: a real space odyssey

Ask Astro web extra: What is the Sun’s hottest temperature?

Why do comets have such eccentric orbits?

Dark energy is consistently described as a property of space itself. Does this mean that, in the total absence of matter, the universe would still exist?

How do globular clusters form? Can such massive concentrations of stars arise from gas clouds alone, or is a central black hole required?

How to determine atmospheric extinction

Does Titan have the requirements to support life?

What is the smallest star in the universe, and where is it?