xkcd.reader inoffiziell · kein Affiliate
? 1276 / 3237 11.10.2013

Angular Size

If the celestial sphere were mapped to the Earth's surface, astronomy would get a LOT easier; you'd just need a magnifying glass.
Alt-Text (der eigentliche Witz)
If the celestial sphere were mapped to the Earth's surface, astronomy would get a LOT easier; you'd just need a magnifying glass.