Here’s this week’s image for the WITU Challenge, to test your visual knowledge of the cosmos. You know what to do: take a look at this image and see if you can determine where in the universe this image is from; give yourself extra points if you can name the spacecraft responsible for the image. 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 now been posted below
This the is Apollo 11 anniversary edition of WITU!
This is a microscopic look at one of the Moon rocks returned by the Apollo astronauts. It shows a glass spherule (about 0.6 mm in diameter) produced by a meteorite impact into lunar soil. Features on the surface are glass splashes, welded mineral fragments, and microcraters produced by space weathering processes at the surface of the moon.
The astronauts brought back 841 pounds of rocks from the lunar surface, and scientists say the rocks are completely unique and couldn’t have come from Earth. There is little or no water in these rocks, plus they are peppered with tiny micrometeorite hits, as seen on this sample. This could only happen to rocks from a planet with little or no atmosphere… like the Moon.
Enjoy the Apollo 11 anniversary hubbub and come back next week for another WITU challenge!