ASTR 103 Lecture Notes - Lecture 1: Astronomical Object, Celestial Equator, Solar Time
Document Summary
To understand the universe, astronomers use the laws of physics to construct. Scientific method: a reiterative process based on observations, logic and. Hypothesis: a concept or idea that seems to explain a phenomenon or. Model: a set of hypotheses that have withstood observational or experimental. Theory: a set of related hypotheses that can be pieced together into a self consistent description of natural observations. Law of physics: theories that accurately describe the workings of physical reality and have stood the test of time and been shown to have great and general validity observations tests. C. a reiterative process based on observations, logic and skepticism. The star we call the sun and all the celestial bodies that orbit the sun solar system. By observing galaxies, astronomers learn about the origin and fate of the universe the sky. Astronomers use angles to denote the positions and apparent sizes of objects in. The basic unit of angular measure is the degree.
