Winter Triangle

The Winter Triangle is an asterism visible during the winter months in the northern hemisphere. It consists of three very bright stars including Sirius in Canis Major, Procyon in Canis Minor and Betelgeuse in Orion.

Betelgeuse

Betelgeuse is a red supergiant in the constellation of Orion. It's bright red colour and position as Orion's right shoulder make it unmistakable.

If you could place Betelgeuse where our Sun is it would engulf all of the planets up to and probably including Mars.

Image: At this small scale Betelgeuse dwarfs our Sun which appears as a small dot a few pixels wide.

Betelgeuse is one of three stars which form the asterism, the Winter Triangle.

Orion

In legend Orion was a hunter who fought Taurus the bull. It's lead star is Betelgeuse, a red supergiant which is so much larger than The Sun that if it were to be placed where the Sun lies now it would completely engulf all of the planet up to and beyond the orbit of Mars. However, Betelgeuse is not Orion's brightest star. That position falls to Rigel.