P1 Topic 3: Waves and the Universe This topic looks at: The formation of our universe The search for Aliens Lifecycle of stars Describe the lifecycle of a star like our sun and a star bigger than our sun using pictures Define key terms Universe Nebulae Galaxy Star Solar System What type of waves can we use to explore space? Which type of waves are absorbed by the atmosphere? Compare and contrast theories about the beginning of our universe including steady state theory and big bang theory Keywords: cosmic microwave background radiation, red shift, space probes, rovers What are the different ways we can explore space? (Include information about SETI) Steady State Big Bang Theory Both How do we know space is expanding? Keywords: red giant, supernova, white dwarf, black dwarf, fusion reactions, main sequence, neutron star