Fundamental Concepts in Astronomy and Astrophysics
Science & the Universe
Astronomy = study of celestial objects and their interactions.
Scientific method: relies on observation, testing, and revision.
Distances measured in light-years; light travels at ~300,000 km/s
Scientific notation helps handle large/small numbers. γ
Observing the Sky
Constellations = regions in the sky (88 official).
Sky appears to move due to Earth’s rotation (24h) and orbit (365 days).
Zenith = overhead; meridian = N to S through zenith.
Ecliptic = Sun'... Continue reading "Fundamental Concepts in Astronomy and Astrophysics" »
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