Welcome to Astronomy & Telescope Astronomy

 
 

  Modules

· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· FAQ
· Feedback
· Forums
· Journal
· Members List
· Private Messages
· Recommend Us
· Reviews
· Search
· Statistics
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account
 

  Who's Online

There are currently, 9 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here
 

  Search



 

  Languages

Select Interface Language:

 

  Random Headlines


Space Shuttle
[ Space Shuttle ]

·Astronomy: Space Shuttle - SPACE STATIONS
·Astronomy: Space Shuttle - THE CHALLENGER DISASTER
·Astronomy: Space Shuttle - SHUTTLES AND STATIONS
 

 
  Sunlit Cloud: Astronomy: Sunlit Cloud - CREPUSCULAR RAYS
Posted on Friday, December 10 @ 18:59:02 CST by astronomy
 
 
  Sunlit Cloud

CREPUSCULAR RAYS

Sunsets are often depicted in paintings with majestic, beams streaming up radially into the sky from the already set Sun. Exaggerated as the artist may make them appear/sunbeams can often be seen in clear skies 10 to 15 minutes after sunset (or before sunrise). This phenomenon is called crepuscular radiation (from the Latin word crepusculum, meaning "twilight").



Crepuscular rays are caused by a cloud, below the horizon partially. blocking the Sun. The shafts of sunlight that get past the cloud illuminate dust particles in the air above the horizon, creating spectacular rays that occasionally reach to the opposite point in the sky. As the cloud moves and the Sun's angle changes, the rays too, shift across the sky. The phenomenon may last for several minutes.

 
 
  Login

Nickname

Password

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.
 

  Related Links

· More about Sunlit Cloud
· News by astronomy


Most read story about Sunlit Cloud:
Astronomy: Sunlit Cloud - Rainbow-OVER THE RAINBOW

 

  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad

 

  Options


 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend

 

 
 
Associated Topics

Sunlit Cloud
 
 


 
 
"Login" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.
 
 


 
 
No Comments Allowed for Anonymous, please register
 
 


 
  Astronomy & Telescope Astronomy

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2004 by Astronomy & Telescope Astronomy
You can syndicate our news using the file backend.php or ultramode.txt