Hello Elib! : -) I love being able to look at crystals in rocks that were brought back from the Moon by NASA astronauts in the 1960s/1970s with super-powerful microscopes that use electrons (found in atoms) to see things on a micro-scale! I also love using ions (charged atoms) and X-rays (similar to those use in hospitals) to study the insides of the rock samples : -)
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