Before it slips away and becomes belated as so many occasions seem to do, here's wishing everyone a very happy Earth Day!
The picture above is a screen shot from the Orbiter space flight simulator, which I keep wanting to return to playing with, but never seem to have time. This is a nice, big-picture graphic, but as a celebration of the Earth, it pales in comparison to the daily stream of fascinating Earth images beamed down from the International Space Station by its commander, Col. Chris Hadfield. Just amazing stuff. Follow him on Twitter or Facebook (or on Tumblr) if you really want to get to know the face of this wonderful planet! He also does great science demonstrations (thanks to Astropixie for this tip).