Go deeper into the stories of Astronomy magazine. These online features bring you additional research, interviews, photos, and more our editors turned up while creating the stories for this issue.
 | University of Illinois Professor Emeritus James Kahler explains this process.
Published: April 23, 2008 |
 | NASA now tracks more than 10,000 pieces of junk orbiting Earth — and it took humans just 50 years to create this mess.
By
Richard Talcott //
Published: April 23, 2008 |
 | Satellite-watching was more than a hobby 50 years ago.
By
Phil Harrington //
Published: April 23, 2008 |
 | Astronomers call gamma-ray bursts the biggest bangs since the Big Bang. NASA animator Dana Berry shows you how one works.
Published: April 23, 2008 |
 | Watch for the equivalent of 5 billion years as the merger of the Milky Way and the Andromeda Galaxy results in the birth of a single elliptical galaxy: Milkomeda.
Published: April 23, 2008 |