[es] Manchas solares

[ca] Taques solars

[gl] Sol-Manchas

[en] Sunspots

[fr] Taches solaires

Actividad solar

Radiación solar

http://id.loc.gov/authorities/subjects/sh85130491

http://lemac.sgcb.mcu.es/Autoridades/LEMAC201233328/concept

http://data.bnf.fr/ark:/12148/cb119796960

http://lemag.sgcb.mcu.es/Autoridades/LEMAG201304013/concept

Manchas solares--Obras anteriores a 1800