John Jackson (astronomer)
[ca] John Jackson (astrònom)
[de] John Jackson (Astronom)
[es] John Jackson (astrónomo)
[fr] John Jackson (astronome)
[pl] John Jackson (astronom)
[pt] John Jackson
[ru] Джексон, Джон (астроном)
[sco] John Jackson
[sl] John Jackson (astronom)
[uk] Джон Джексон