Astro 1

Penn State

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Astronomy 001: Comprehensive Study and Exam Guide
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December 2025

2025/2026
This document is a comprehensive study and exam guide for an intro astronomy course (Astronomy 001) covering the astronomical universe. It explains core concepts like sky motion, seasons, the Moon, the Sun, light, stellar properties, gravity, galaxies, and cosmology, and it includes practice quizzes, answer keys, key equations, constants, and recent 2024–2025 updates on dark energy, black holes, and Hubble constant measurements
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