First day of fall this morning, in the 10:47 minute UT. (This weblog is set to universal time.) Spaceweather has one of the most beautiful rainbows I've ever seen photographed - so rare to see a sunset rainbow.
Anticrepuscular rays focus down to the point exactly opposite the sun in the sky sphere, the "antisolar point" (check out the gallery). That means if the sun is above the horizon, the antisolar point is below, and vice-versa. Crepuscular is a beautiful word by itself, but only once you get past the similarity to corpuscles. cre·pus·cu·lar: 1 : of, relating to, or resembling twilight : DIM 2 : active in the twilight (m-w.com)
I've desired a telescope, and luckily came across this sensible page. Here's an ad that shows nice priorities.
By the way, NASA is publicizing standing an egg on its end today.
Posted by argus at September 23, 2003 03:07 PMAnticrepuscular rays are common here in Tocantins, Brasil at 10 degrees south latitude. Smoke from wildfires plus clouds in the sunset combine to form great bands of converging light and dark in our eastern sky at sunset.
Posted by: Robert Yassanye at June 25, 2004 03:08 AM