ASTR 101 Lecture Notes - Lecture 1: Virgo Supercluster, Gas Giant, Astroid
12 Dec 2017
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Solar system is in the milky way. Milky way is in the local group. Local group is in the local supercluster. A large, glowing ball of gas that generates heat and light through nuclear fusion. Hydrogen and helium (basic gas composing the star) Heavy enough thats its own gravity creates nuclear fusion. A moderately large object that orbits a star; it shines by re ected light. Planets may be rocky, icy, or gaseous in composition. Only planets we can see from earth are the planets in our solar system. They are not heavy enough to create their own fusion reaction. Its a planet that orbits another planet. A relatively small and rocky object that orbits a star. A relatively small and icy object that orbits a star. When a comet comes close to a sun the water vapour is seen from earth (shooting star look) A star and al the materials that orbits it, including its planets and moons.
