1) Dark patch on a distant sun
Found on
https://www.crosswordclues.com/clue/starspot
Starspots are the equivalent of sunspots located on other stars. Spots the size of sunspots are very hard to detect on other stars because they are too small to cause detectable fluctuations in brightness. Observed starspots are in general much larger than those on the Sun: up to about 30% of the stellar surface may be covered, corresponding to st...
Found on
http://en.wikipedia.org/wiki/Starspot
No exact match found.
