7.1 Studying the Solar System

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Department
Astronomy & Astrophysics
Course
AST101H1
Professor
C.B.Netterfield
Semester
Fall

Description
CHAPTER 7: OUR PLANETARY SYSTEM 7.1 Studying the Solar System Comparative Planetology -comparing the worlds to one another, seeking to understand their similarities and difference -sun and planets are all quite small compared to the distances between them The Sun -contains more than 99.9% of the total mass in our solar system more than a thousand times more massive as everything else in the solar system combined -composition: 98% hydrogen and helium, 2% others -the largest and brightest object in our solar system -34984OLL98K49K74J03,3K0OL:2J,8 -84:7.0419K08:380307JOL08005L3L98.470ZK070902507,9:708,357088:708,7084KLJK9K,99K0 sun is a nuclear fusion power plant -each second, fusion transforms about 600 million tons of 9K08:38K74J03L3942LOOL43943841 helium -the missing 4 million tons becomes energy -shone steadily for almost 5 billion years and will continue to shine for some 5 billion years more -most influential object in our solar system -its gravity governs the orbits of the planets -its heat is the primary influence on the temperatures of planetary surfaces and atmospheres -it is
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