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A) 1950 B) 1930 C) 2000 D) 1900
A) Clyde Tombaugh B) Albert Einstein C) Isaac Newton D) Galileo Galilei
A) 3.67 billion miles B) 20 million miles C) 100 million miles D) 1 billion miles
A) Dwarf planet B) Asteroid C) Comet D) Gas giant
A) Hubble Space Telescope B) New Horizons C) Cassini D) Voyager 1
A) Nix B) Hydra C) Charon D) Styx
A) 100 Earth years B) 248 Earth years C) 365 Earth days D) 10 Earth years
A) Carbon dioxide B) Helium C) Oxygen D) Nitrogen |