Stars and Galaxies Crossword Puzzle

QUESTIONS LIST:

• corona : outer layer and largest part of the sun's atmosphere
• binary system : two or more stars revolving
• big bang theory : explanation for the beginning of the universe
• photosphere : lowest layer of the sun's atmosphere that gives off light
• supernova : produced from an explosion that occurs when a star's core collapses
• sunspots : dark cooler areas of the sun's surface
• chromospheres : layer of the sins atmosphere above the photosphere
• galaxy : large groups of stars, gas, and dust held together by gravity
• black hole : object dense that nothing including light can escape it
• neutron star : star in which only neutrons can exist in its core