ASTR 1110 book summary - ch.2.1

ASTR 1110 book summary - ch.2.1 - Astronomy Book Notes 2.1...

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Astronomy – Book Notes 2.1 Patterns in the Night Sky - Constellation : a region of the sky with well-defined borders o Official borders set in 1928 by members of the International Astronomical Union (IAU) o Sky divided into 88 constellations - Celestial Sphere : The imaginary sphere on which objects in the sky appear to reside when observed from Earth o North Celestial pole : point directly over Earth’s North Pole o South Celestial Pole : point directly over Earth’s South Pole o Celestial Equator : a projection of Earth’s equator into space, makes a complete circle around the celestial sphere o Ecliptic : path the sun follows as it appears to circle around the celestial sphere once each year - The band of light called the Milky Way bears an important relationship to the Milky Way Galaxy: It traces our galaxy’s disk of stars – the galactic plane – as it appears from our location in the outskirts of the galaxy - The Local Sky o The Local Sky: The sky as viewed from a particular location on Earth (or another
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ASTR 1110 book summary - ch.2.1 - Astronomy Book Notes 2.1...

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