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