Stars/Sirius - Wikiversity

Sirius System, The Universe of The Universe Wiki

Stars/Sirius - Wikiversity

File:Nearby Stars (14ly Radius).svg - Wikipedia

Sources/First astronomical sources - Wikiversity

Sirius, Beyond Universe Wiki

Stars/Sirius - Wikiversity

Sirius System, The Universe of The Universe Wiki

Stars/Betelgeuse - Wikiversity

File:Sidney Hall - Urania's Mirror - Canis Major, Lepus, Columba Noachi & Cela Sculptoris.jpg - Wikipedia

File:Albireo.jpg - Wikipedia