Monday, January 30, 2006
Sirius - The brightest star visible from Earth, second only to the Sun, has an apparent magnitude of -1.46.
BrightStars - The winter sky has some of the brightest stars visible from Earth. Of the twelve brightest stars, seven shine in winter: Sirius, Capella, Rigel, Procyon, Betelgeuse, Aldebaran, and Pollux.
13.7 Billion Years since the Big Bang
Posted by Wayne at 8:57 AM
Friday, January 27, 2006
Monday, January 23, 2006
Friday, January 20, 2006
Thursday, January 19, 2006
SnowCover - At this time of year, approximately 35% of Earth's total land area is covered with snow; Since the Northern Hemisphere is 71% land, most of that is covered in snow.
VenusJoinsJupiterSaturn - Beginning around January 19, Venus will be visible in the morning sky throughout the winter.
Posted by Wayne at 8:54 AM
Wednesday, January 18, 2006
Sunday, January 15, 2006
Friday, January 13, 2006
Thursday, January 12, 2006
Wednesday, January 11, 2006
Tuesday, January 10, 2006
WeakLight - The Sun's low angle forces light and heat to travel through the maximum amount of atmosphere before reaching Earth's surface. More atmosphere tends to diffuse or block the Sun's rays; thus winter is dimmer as well as colder.
Sun tracks low on the horizon yielding short gray days.
Posted by Wayne at 8:50 PM