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Astronomy Puzzle 2

Astronomy Review
Across
Galaxies are speeding away from us at a speed that is related to their distance as indicated by the red shift and using the Doppler Effect
The process that occurs when rock fragments collide and stay connected
The point at which the moon is farthest from the Earth
Speed increases the closer Earth is to the sun and decreases the farther it is from the sun
Orbit over the Earth at a speed that keeps them one one spot on Earth's surface
Depend on how much of the sunlit side of the moon is facing the Earth where we can see it
Earth's only orbiting natural satellite, stabilizes the tilt of the Earth, and it is a lot older than the earth
Occurs during a new moon
The chemical, temperature, and motion of a star
Used to measure distance to stars
Down
Center of mass of an orbiting system
One month
Produced by the tilt of the Earth's axis and its revolution around the sun which changes the amount of direct solar energy reaching the surface of the Earth
The plane in which the planets orbit the Sun
Days and nights are equal in length all over Earth as neither hemisphere is tilted to the sun
The planets that are the most alike
Small, irregular shaped body formed by colliding matter in early Solar system
Earth's orbit is slightly elliptical
One object of the Kipler Belt where most comets originate and several other dwarf planets exist
Polar Operationa Environmental Satellites that collect data from pole to pole to help monitor weather systems or pollution problems