Henry Cavendish
Description: Henry Cavendish was the first scientist to test gravity in the laboratory. Thanks to the "Cavendish Experiment," we know how much Earth weighs!
Category: Janet's Planet
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Game Spotlight
Fill in the Sudoku grid using these simple rules. Each of the nine blocks has to have all the numbers 1-9 inside of its squares. Each number can only appear once in a row, column or box of nine squares.