December 11, 2009, 9:01 am
I got up this morning at 4AM to look at Mars, whose apparent size is growing and will peak in January. There are 60 arc-minutes in a degree and 60 arc-seconds in an arc-minute. Mars right now is about 10 arc-seconds in diameter. Even at 200x with my highest-quality eyepiece, it was tiny. I kind-of, sort-of, maybe saw a white polar cap and even more speculatively told myself that I was glimpsing a shadow on the disk that possibly could be a surface feature.
But probably not.
December 9, 2009, 9:00 am
December 4, 2009, 10:15 am
The sun sets today at 5:45PM, a minute later than it’s been setting since November 16. While sunrise continues to come later until the solstice, I always think of today as when the day “starts getting longer.”

December 2, 2009, 9:04 am
Just yesterday I was wondering whether the animation was static or procedurally generated. Since the article says it’s “105 frames” I guess it’s static.
How one man designed the Windows 7 boot animation.
December 2, 2009, 8:59 am