Astronomy Crossword Puzzle

What is the first planet from the sun?
What has a force of gravity so strong not even light can escape?
What is our galaxy called?
What was the name of the space shuttle that blew up at takeoff and killed all of its crew?
What orbits around the sun in a long narrow ellipse?
What is a meteor called when it hits Earth?
How is a star born?
How many planets are there?
What is the hottest planet?
How many planets have rings?
Who sent the first satellite into space?
What is the creation of our universe called?
What takes up most space in our solar system?
What are the dark spots on the sun called?
What part of the sun can we see from Earth?
What are the huge reddish loops of gas that explodes from the suns surface?
What rocky objects are too small to be considered planets?
What is the distance from the Earth to the Sun called?
What is the trapping of heat by a planets atmosphere called?
What color is Mercuries sky?
What is the only planet that can sustain life in our solar system called?
What keeps the planets from being pulled into the sun?
What causes gravity?
What is the explosion of a large mass star called?
What is a formation of stars called?