Define the problem. look around your house or outside. is there anything that you're wondering about or have questions about? for instance, do you have any animals in the home? maybe you have a hamster and wonder if it is more active in the day or at night. if you go outside, look at birds or insects. maybe you wonder if ants have a food preference. your question doesn't have to involve live organisms. maybe you wonder what type of material best blocks out the sun or if your sense of sight or smell affects how food tastes. think of a question you want answered and state it in the first box below. 125+ sentence

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?