Astronomy Crossword

Is the leading explanation about how the universe began
the science of the origin and development of the universe. Modern astronomy is dominated by the Big Bang theory, which brings together observational astronomy and particle physics.
Ptolemy, Latin in full Claudius Ptolemaeus (fl. AD 127-145, Alexandria), ancient astronomer, geographer, and mathematician who considered the Earth the center of the universe
a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles
a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
the star around which the earth orbits.
a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
an amount of space between two things or people. "I bicycled the short distance home