2nd in a series of posts inspired by Elite Dangerous, a space video-game that I’ve been playing; full of images, cool astronomy & science facts, and associated sci-fi & pop culture trivia.
Sol Region Sight-Seeing Tour – Stop #2:
Pollux / β Geminorum
Summary:
Pollux is 34 lightyears from Sol, and the closest giant star to our sun. Pollux is 18 ly from Stop 1 on our tour, it’s “twin” Castor. Pollux is the 18th brightest star as seen from Earth (including the Sun) and the brightest star in constellation Gemini. Pollux is an orange-hued “evolved giant” star in a special spectral class, called Class KO-III. Earlier in its life it would have been a Class A (hot white or blue/white dwarf star), but Pollux has exhausted the hydrogen in its core, and expanded and cooled as a result. As such the star has moved off the line of main sequence or “adult” stars and entered it’s old age “giant” phase, and is estimated to be about 724 million years old. It is about two times the mass, and almost NINE times the radius of our Sun.
Continue reading Sol Region Sight-Seeing Tour #2 – Pollux
The Tour? Why that’s a geeky idea I had to dig up all the fact and fiction about the stars around and including our Sun, known as Sol in science and science fiction. Ostensibly, as a bit of a learning experience while I go about the playing a video-game.
