|Light Travel Time|
|Around the circumference of earth||1/7 second|
|To the moon||1 second|
|Across the solar system||a few hours|
|Nearest Star (Proxima Centauri)||4.3 years|
|Across Milky Way Galaxy||100,000 years|
|To Andromeda Galaxy||2 million years|
|"Across" Universe||14 billion years|
Earth and moon, in eclipse geometries (solar, then lunar), and with correct scaling of both size and separation.
Sirus is a main sequence star, like our sun, but more massive, and hotter. Arcturus is a red giant star.
Betelguese and Antares are bloated red supergiants - about as big as stars can get. Rigel is a blue main sequence star. Due to its hotter surface, Rigel is as bright as Betelgeuse. Betelgeuse marks a "shoulder" of Orion, Rigel marks a "knee."