Phoenix and Me
The successful landing of Phoenix on the northern polar region of Mars was a sensational event (which live coverage by the Science Channel managed to make dull; how could they do that?), being the first rocket-powered soft landing on Mars since 1976, when the Vikings landed. You've all seen pictures from the Mars surface, no doubt--but you might not have seen this picture, the first time any craft has ever been photographed landing on another world:
If you go to the full image at Astronomy Picture of the Day, you'll see the magnificent crater near which Phoenix landed.
Phoenix is not just a national and international triumph; it's a personal one, as well. I was reminded by the Planetary Society that my family and I are personally represented on Mars by this craft: it carries a DVD that bears our names, along with those of 250,000 other people who signed up for the mission. It also bears a library of science and science fiction works about Mars, to be recovered and enjoyed by future explorers. Here's a picture, taken by Phoenix itself, of the DVD on Mars.
Now that's a good feeling, knowing that a part of me is up there on Mars right now.