|
|
In my January column, I challenged readers to look for some of the finest naked-eye features on the Moon during lunar perigee — when the Moon is closest to Earth in its elliptical orbit. But have you ever wondered if we can tell whether the Moon is at perigee or apogee (when it's farthest away) using only our unaided eyes? The problem is that during the night the Moon sails across the vast vault o...
Read more » |
August 2010: Have amateur astronomers spotted details on the seventh planet, or has it all been an illusion? By
Stephen James O'Meara //
Published: June 28, 2010 |
|
 |
Look for this icon. This denotes premium subscriber content.
Learn more » |
Receive news, sky-event information, observing tips, and more from Astronomy's weekly e-mail newsletter
|