How big are the stars and the planets in the Universe?

I got this interesting email-forward today showing the sizes of the planets in the Solar System compared with the Sun and other stars. We are indeed small and negligible compared to the other occupants of our universe.

Arcturus is third brightest star in the night sky after Sirius and Canopus. Pollux is also one of the brightest star. Antares (below) is the 16th brightest star in the night sky. Betelgeuse(below) is the ninth brightest star.

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