How quickly does the weather change in DC?

Sometimes, just this quickly. Around 2 pm I saw the classic mackerel sky and mares' tails. The sunset was really spectacular, with lots of reds and oranges. Just about 7 pm I was walking home and i noticed the clouds had cleared enough to see Venus and a gorgeous crescent moon. My photo was too blurry, so I'm using Phil Plait's. But that was about how it looked. The next morning we woke up to rain. I caught it about 11 am while crossing the bridge into Georgetown.

Couldn't resist sharing:

The Overview Effect

I went to a very interesting lecture at Air and Space yesterday. Four panelists discussed the shift in viewpoints going into space causes but how hard it is to share that experience. Two were astronauts and two were philosophers. One astronaut talked about the impact of returning to gravity. How do we get anything done? A common thought is how very thin the atmosphere is. All four agreed we live on a spaceship, we just don't realize it. They talked about how shocking that first look out the window is. All four are proponents of commercial space flight, so more people might experience it someday.

They showed a video. One thing that surprised me was seeing how fast they book it around the earth. At 92 minutes a circuit, they are really moving.

Here is the link. Take a look.

Http://www.video.com/55073825