July 28, 2007
Light takes eight minutes to travel from the Sun to the Earth. It took the universe 13.8 billion years to make you.
Full Moondark
Birthday · July 28, 2007
A little universe, just for you
Your date.
Ready to give.
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APOD published July 28, 2007. Credit: Frank Barrett. A publication-date match, not a photo taken on your date. Independent of NASA.
The brilliant full Moon might not look quite like this to skygazers next Monday, but the image is a mosaic of 18 digital frames recorded when the Moon was only about seven hours past its exact full phase or time of maximum illumination as viewed from Earth. Here, the pixel values corresponding to light and dark areas have been translated in reverse, or inverted, producing a false-color representation reminiscent of a black and white photographic negative. Normally bright rays from the large crater Tycho dominate the southern (bottom) features as easily followed dark lines emanating from the 85 kilometer diameter impact site. Normally dark lunar mare appear light and silvery. Traditionally, astronomical images recorded on photographic plates were directly examined in this negative color scheme, which can help the eye pick out faint details.
Image credit: Frank Barrett