Ready for another Where In The Universe Challenge? Here’s #73! Take a look and see if you can name where in the Universe this image is from. Give yourself extra points if you can name the spacecraft responsible for the image. As usual, we’ll provide the image today, but won’t reveal the answer until tomorrow. This gives you a chance to mull over the image and provide your answer/guess in the comment section. Please, no links or extensive explanations of what you think this is — give everyone the chance to guess.
UPDATE: The answer has been posted below.
Doesn’t the Moon look good in pink? Yes, this is our Moon, as seen in gamma rays by the Compton Gamma Ray Observatory. If you could see gamma rays – photons with a million or more times the energy of visible light, the Moon would appear brighter than the Sun according to astronomers who worked with the Energetic Gamma Ray Experiment Telescope (EGRET), which toiled in orbit on board Compton from April 1991 to June 2000.
EGRET’s gamma-ray vision was not sharp enough to resolve a lunar disk or any surface features, but its sensitivity revealed the induced gamma-ray moonglow.
More info about Compton Gamma Ray Observatory.
Check back next week for another WITU challenge!
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