GG101 Lecture 2: Chapter 2 – Solar Energy to Earth and the Seasons
Document Summary
Chapter 2 solar energy to earth and the seasons. The solar system, sun and earth: the northern hemispheres winter proportion to their mass large, slowly rotating and collapsing cloud of dust and gas) In our solar system, some 165 moons are in orbit about six of the eight planets. Milky way galaxy a flattened, disk shaped collection of stars in the form of a barrel spiral a spiral with a slightly barred or elongated core. Gravity the mutual attraction exerted by every object upon all other objects in. Planetesimal hypothesis how suns condense from nebular clouds (nebula = Speed of light roughly 300,000km/s-1 (299,792) or about 9. 5 trillion km per year, Perihelion earth"s closest position to the sun, which occurs on january 3rd during. Aphelion earth"s farthest position from the sun, which occurs on july 4th during. Plan of earth"s orbit is plane of the ecliptic which is captured by the term light-year.
