HW 1 - Jennifer Chinn Section Tuesday 5-5:50 Astronomy 1 HW...

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Jennifer Chinn Section: Tuesday 5-5:50 Astronomy 1 HW 1 1.11. A hypothesis is a collection of ideas that seems to explain what is observed, whereas a theory is a self-consistent description of nature. 1.28 . a) 1.581 x10 -5 light years b) 4.851 x10 -6 parsecs c) Yes, parsecs and light years are useful units for describing this distance because they make it easier to perceive the tremendous distance that may be difficult to understand as the numbers in mere standard measuring units get much larger and much more confusing. 1.35 . d= 4.1253 x10 2 meters 2.9 . 90° and it does not depend on what point on the horizon you choose. 2.10 . The Big Dipper is circumpolar, which means it constantly revolves around the north celestial pole, never rising or setting, which means that an observer in Antarctica will never be able to see the Big Dipper because they are positioned below the horizon of the northern hemisphere, where the stars never appear. 2.17 . You have to be at the North Pole in order to see the north celestial pole directly overhead. The maximum possible elevation of the Sun above the
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