ASTR 102

American Public University System

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LAB 4 ASTR 102
2.0

(1)

2.0

2

4

November 2022

2022/2023

A+
Lab 4 How Big is our Galaxy? ASTRO 102 1 Objective The objective of this lab was to introduce methods that astronomers use to estimate properties of astronomical objects using observations. 2 Introduction A variable star is a star whose brightness changes periodically. Variable stars are comprised of two categories, intrinsic and extrinsic variables. The luminosity of an intrinsic star changes, whereas only the apparent brightness of an extrinsic star changes due to changes in the amoun...
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