Play around with overlaying the celestial sphere onto the surface of the earth. 1 meter on earth = 32 milliarcseconds in the sky, which is finer than the resolving power of the Hubble Space Telescope. Depict asterisms "actual size": it'll usually take huge amounts of area.
Inspired by the hoax of an ancient civilization aligning their cities with the stars.
Previously similar. Also xkcd 1276 "Angular size".
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