Neil Armstrong, RIP

43 years ago, humans first set foot on the Moon. Even though we haven't been back in 40 years, the dream of walking on another world still lives on -- most recently with Curiosity, the latest Mars rover.

Today is the official day of mourning for Neil Armstrong, with flags flown at half-staff until sunset, and also the day of the private memorial service. This article has a great image gallery of his career, and details on tributes. As the article suggests,

...the family has made one other suggestion for honoring Armstrong. Remember? "Honor his example of service, accomplishment and modesty, and the next time you walk outside on a clear night and see the moon smiling down at you, think of Neil Armstrong and give him a wink."

Friday's moon is a good one to wink at: It's the second full moon in a calendar month, which is known as a "blue moon." The moon won't actually be blue, but if the skies are clear, it should be big and bright and shining all night.

If it's cloudy where you are on the planet, you can click over to the online viewing party where remote-controlled telescopes worldwide will be focused on Tranquility Base and beyond.