Crepuscular rays!

Unlike some other atmospheric phenomena, crepuscular rays (photo above by Michael Alumbaugh) are fairly easy to observe, and a truly wonderful sight.

Although crepuscular rays appear to radiate out from a single point, this is a perspective effect. They are actually almost parallel, resulting from clouds casting long morning shadows or evening shadows. This becomes clear when crepuscular rays are seen from above, as in this International Space Station photo:

See here for a detailed explanation of the phenomenon. The name comes from the Latin crepusculum (twilight, dusk).


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.