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