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Astro 1 ch 1 key words Diagram
Apparent size of an object, class 10
Apparent magnitude - Wikipedia
Star - Measurement, Parallax, Light-Years
Apparent motions of the Sun and Moon
Geometry of Perspective –
Positions and Sizes of Cosmic Objects - Las Cumbres Observatory
Angular size and distance worked example
Astronomical Unit: How far away is the sun?
RASC Calgary Centre - The Sun and Transits as Seen From the Planets
Diameters of Stars
Lecture 2: Angles
Stig's Sky Calendar - Angular diameter
Angular Size - ShotStat