Skip to comments.Astronomy Picture of the Day -- The Gegenschein Over Chile
Posted on 01/14/2014 4:49:49 PM PST by SunkenCiv
Explanation: Is the night sky darkest in the direction opposite the Sun? No. In fact, a rarely discernable faint glow known as the gegenschein (German for "counter glow") can be seen 180 degrees around from the Sun in an extremely dark sky. The gegenschein is sunlight back-scattered off small interplanetary dust particles. These dust particles are millimeter sized splinters from asteroids and orbit in the ecliptic plane of the planets. Pictured above from last year is one of the more spectacular pictures of the gegenschein yet taken. Here a deep exposure of an extremely dark sky over Las Campanas Observatory in Chile shows the gegenschein so clearly that even a surrounding glow is visible. Notable background objects include the Andromeda galaxy, the Pleiades star cluster, the California Nebula, the belt of Orion just below the Orion Nebula and inside Barnard's Loop, and bright stars Rigel and Betelgeuse. The gegenschein is distinguished from zodiacal light near the Sun by the high angle of reflection. During the day, a phenomenon similar to the gegenschein called the glory can be seen in reflecting air or clouds opposite the Sun from an airplane.
(Excerpt) Read more at 188.8.131.52 ...
[Credit & Copyright: Yuri Beletsky (Las Campanas Observatory, Carnegie Institution)]
Beware the Gegenschein .
Wow. Using the full pic as wallpaper. Gorgeous!
Thanks for the idea!
Looks good on 12X17.
Gegenschein, darling, gegenschein ...
Ain't no way I could pass up a thread with that title!
Didn't know what the hell to expect, but it didn't sound like a good thing :)
That picture is upside down :)
I was trying to orient myself, but, with Andromeda at the bottom and Orion at the top, it was difficult.
Hope to see this IRL one day.
Sounds like a European mime troupe, eh? ;’)
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.