![]() Trending Questions What is Ceres number from the sun? What did Hubble discover that indicated that the universe was expanding? How did Ptolemy help us understand the solar system? What causes a solar nebula to initially begin to form from a solar system? How do scientists measure the distance and the brightness of objects in the sky? Why meteorites burn in the mesosphere? How long does it tack for earth to orbit the sun? What is a super hot cloud of gas and ash ejected from a volcano called? What happens to the direction that the earth's axis is pointed throughout the year? How did Edwin Hubble determine that the universe was expanding? Where did all the chemical elements in our solar system come from? How are the sun moon and earth lined up during a quarter moon? Does the Oort cloud go around the entire solar system? Why is it important to take the declination into account if you are traveling with a compass? Was nitrogen formed 4.
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