Just in case you haven't read anything on the web yet today, it is the 40th anniversary of the Apollo 11 spacecraft landing on the Moon. Neil Armstrong's "One small step for man, one giant leap for mankind," seems to reverberate as much today as it did back in 1969. And there are no shortage of tributes on the web to prove it.The most elaborate may be Google adding the moon to Google Earth. Yes, you can now explore the lunar surface just as you would Earth's surface in the software. You'll see views of the lunar surface as taken by the Apollo astronauts, and even get narrated tours.