Astronomy Crossword

a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
having or representing the sun as the center, as in the accepted astronomical model of the solar system.
Is the leading explanation about how the universe began
having or representing the earth as the center, as in former astronomical systems
a fixed luminous point in the night sky which is a large, remote incandescent body like the sun. synonyms: celestial body, heavenly body, sun
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.
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 celestial body moving in an elliptical orbit around a star.
a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles
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.