Vocabulary
, big bang theory, nebular theory, solar nebula, supernova, protoplanetary disk, nuclear fusion, accretion, planetissmals, gravity, red giant, white dwarf, galaxy, gravity, spiral galaxy, constellation, spiral galaxy, elliptical galaxy, irregular galaxy, light year, light pollution, nebulae, dark matter, black holes, telescope, Hubble telescope, orbits, elliptical, asteroids, comets, orbital motion, light year, radio astronomy techniques, Big Bang Theory, stars, nuclear fusion, supernova, protostar, stellar evolution, white dwarf, neutron star, black hole, blue giant, main sequence stars, fusion, red giant star, singularity, event horizon, spiral galaxies, elliptical galaxy, irregular galaxy, galaxy clusters, super clusters, solar system, planets, inner planet, gas giants, asteroids, comets, sun, hydrogen, helium