ASTA01H3- Final Exam Guide - Comprehensive Notes for the exam ( 33 pages long!)
Document Summary
Asta(cid:1004)(cid:1005) lecture (cid:1006: all around the world, ancient cultures celebrated heroes, gods, and mythical beasts by naming groups of stars called constellations, the constellations named within western culture originated in mesopotamia, babylon, Egypt, and greece beginning as many as 5000 years ago: of these ancient constellations, 48 are still in use, the astronomers have added 40 modern constellations to fill gaps. Southern cross, but they never see the bid dipper: astronomers measure distances across the sky as angles. These are expressed in units of degrees and subdivisions and degrees called arcminutes and arcseconds: one degree = 60 arcminutes, one arcminutes = 60 arc seconds, therefore, 1 degree = 3600 arcseconds. Earth called precession: earth spins like a giant top, but it does not spin upright relative to its orbit around the. The annual motion of the sun: rotations is the turning of a body on its axis, revolutions is the motion of a body around a point outside the body.
