AS101 Lecture Notes - Lecture 6: Equatorial Bulge, Solar Time, Equinox
Document Summary
The amount of time it takes like to travel from the sun = 8. 3 minutes. Light from the moon to the earth: 498 divided by 400 = 1. 2 seconds. Ecliptic: the apparent path of the sun along the celestial sphere during a year (the sun appears to move eastward along the ecliptic) Vernal equinox: the point on the celestial sphere where the ecliptic crosses the celestial equator from south to north, or the time of year when the sun is at this point. Summer solstice: the point where the ecliptic is farthest north, or the time of year when the sun is at this point. Autumnal equinox: the point where the ecliptic crosses the celestial equator from north to south, or the time of year when the sun is at this point. Winter solstice: point where the ecliptic is farthest south, or the time of year when the sun is at this point. The north pole is facing the sun.
