Components of the Universe and the Big Bang Theory Crossword

closest planet to the sun
form constellations
the Milky Way is this kind of galaxy
rocky planets; inner planets
the star at the center of our solar system
clouds of dust, hydrogen, and helium
a galaxy with no cleanly defined shape
gas giants; outer planets
made mostly of ices mixed with smaller amounts of dust and rock (dirty snowball)
long wavelengths that show objects moving away from us
made up of many planets, moons, stars, and galaxies
very hot but dim stars
there are 8 of these in our solar system
natural satellite that orbits planet Earth
a region of spacetime exhibiting such strong gravitational effects that nothing, not even light, can escape
gravitationally bound system that includes the sun & the objects that orbit it
short wavelengths that show objects moving away from us
small rocky objects that revolve around the sun & are too small to be called planets
small rocky or metallic body in outer space
a meteoroid, comet, or asteroid that enters Earth burning up (shooting star)