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.
 | Associate Editor Daniel Pendick explains why there are no "official" planets beyond Neptune in our solar system.
Published: December 29, 2008 |
 | Uncover more binocular targets in Monoceros this month.
By
Phil Harrington //
Published: December 29, 2008 |
 | Ground and space-based future detectors may give astronomers the information they need to determine what dark energy is.
By
Liz Kruesi //
Published: December 29, 2008 |
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Watch as a new planet forms and cuts a gap in the dusty disk of its birth. Understanding the details of this process could help explain the evolution of solar systems.
By
Daniel Pendick //
Published: December 29, 2008 |
 | We share some of our favorite images of these galaxies from our online collection.
By
Michael E. Bakich //
Published: December 29, 2008 |
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Howard Bond shares his experience capturing V838 Monocerotis.
By
Daniel Pendick //
Published: December 29, 2008 |