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