The Sun finally sets in Barrow, Alaska alvin August 3, 2017 - 10:39am

After 84 days, the Sun finally set in Barrow, Alaska (now known as Utqiaġvik) on August 2, 2017.

(Image from this Twitter page.)

Sun Microsystems, Facebook, and impermanence alvin July 29, 2017 - 12:31pm

This is a smart photo about impermanence from this Twitter page.

Let the Sun shine (Anchorage, Alaska) alvin June 7, 2017 - 10:04am

Back in 2011, I lived in Palmer, Alaska. I drove about an hour down to Anchorage to visit a friend, then drove back to Palmer just after 1:30am. During the drive back I didn’t need my headlights on to see, but I kept them on so other cars could see me more easily. It was like driving during a very long “dawn” or “dusk” period.

That’s quite an illusion

The Milky Way is moving at over half a million miles per hour. (In the time it took me to type that, we sailed about 1,500 miles through the Universe.)

Inside the Milky Way, the Earth revolves around the Sun at 66,600 mph.

The Earth rotates around its axis at about 1,040 mph (depending on your latitude).

And yet, somehow I feel like I’m sitting perfectly still in this chair.

That’s quite an illusion.

Rocky Mountain sunset alvin November 24, 2016 - 10:30am

A Rocky Mountain sunset, near Boulder, Colorado.

The tides, and the pull of the Sun and the Moon alvin January 23, 2016 - 2:05pm
Summer solstice in Talkeetna, Alaska: 'Sun does not rise' alvin June 21, 2013 - 5:30pm

Dateline June 21, 2013, Talkeetna, Alaska: "The Sun does not rise."