A clock in a spaceship runs one-tenth the rate at which an identical clock on Earth runs. What is the speed of the spaceship?
A easons 1. ilt f he Earth: Summer a nd Autumn a) Summer Solstice: Sun at its highest point above the equator, June 21 (Longest day) b) Autumnal Equinox: Sun at celestial equator September 22 ( Equal hours of day and night) 2. inter a nd Vernal S easons a) Winter Solstice: Sun at lowest point below the equator Dec 21 (Shortest day) b) Vernal Equinox: Sun at the celestial equator March 21 (Same hours of day and night) 3. Seasons are determined by the directness of the sunlight onto the earth a) if the ecliptic lines up with the equator, we would get no seasons b) Polaris will not always be the pole star, moves in 26000 years 4. Sidereal- time measured w.r.t “fixed” stars of Celestial Sphere a) Stars reach the same spot in our sky 4 minutes earlier every day B. oon Phases 1. Orbit of the Moon a) Synchronous Rotation- the Moon completes one full cycle in one full revolution around E arth b) Moon shines because