August 19, 2025
There is a 1909 Lincoln penny attached to NASA’s rover Curiosity on Mars. Scientists point the rover’s camera at the coin to make sure it is calibrated correctly. The penny is a nod to Earth geologists who often use coins in photos to provide perspective.
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10 Important Dates in Mars History
The question of whether life could have started on Mars has been asked for centuries—but there’s much more to Mars than that. Here are 10 dates that brought new revelations about the Red Planet. list, space, astronomy, science, mars, exploration, life on mars, martians, meteorites, telescopes,
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Aug 18
What part of animal anatomy was once banned from Mickey Mouse cartoons? -
Aug 17
Which city’s cabbies have to memorize more than 25,000 streets? -
Aug 16
Who is in both the baseball and basketball hall of fame? -
Aug 15
What unusual fuel goes into U.S. Army trucks? -
Aug 14
What unlikely animal is the crocodile closely related to? -
Aug 13
What notorious nude rite of passage was once required by all Ivy League schools? -
Aug 12
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Aug 11
Why was the first woman on a U.S. stamp a European monarch? -
Aug 10
What animal was the first to receive CPR? -
Aug 09
Why did bread once cost a dollar a slice?