What does gravity do to a solar system?

When can you see the Aurora Borealis? Who is the president that greeted Alan Shepard after he went into Space? Do you really need to bring food on the moon? What is the allusion of raising in the sun? What day of the week was August 28 1963? How many g force does the space shuttle pull? If a star was moved twice as far away, how would its brightness be affected? In which layer of the atmosphere is air the thinnest? What is the specific gravity of the opal? How do you make toast using the sun? The outermost layer of the sun's atmosphere? Why has Ender been on earth for two months instead of the originally planned three days? What is Mae jemison's work? How do the pull of gravity indicate that earth shape is spehric? How is the ocean affected by the moon? Which star is hottest supergiant? What are facts about Robert c o'brien? What is the difference between white and blue sky card? How does red shift change how you read a graph of the galaxy? What is a sentence with creation?