GGR112H5 Lecture Notes - Lecture 1: Daytime, Shortwave Radio, Declination
Document Summary
Ggr112 lecture 3 solar energy to earth and seasons. The earth is relatively small in size compared to sun spots and even eruptions which come from the sun. Earth is actually smaller than the average sun spot. Gravity is what holds our solar system and other solar systems together, pulled inward and functioning. Planetesimal hypothesis; states that other minute (small) planets were pulled together (gravity) to form into one. Average distance from earth to the sun is 150 000 000 km. Perihelion closest at january 3 147 255 000 km. Aphelion farthest at july 4 152 083 000 km. Earth is 8 minutes 20 seconds from the sun at speed of light. Plane of ecliptic is the plane of earth"s orbit. Big bang: all matter in the universe can be traced back to one point of origin, rapid outward expansion of universe began ca. 13. 7 billion years ago: forming of stars and simple particles emerged ca.
