Second Planetary System Like Ours Discovered

[longship]

5. Larger than Sol then.

Which means the star's life will be shorter than Sol.

For those who don't know, the stellar classes are O B A F G K M, with O being the largest, hottest, most massive and M being the smallest, coolest, least massive. The more massive a star, the shorter it lives as it burns through its fuel faster. Sol is rated as a G class (G3).

Earth will become uninhabitable in about another billion years as Sol gets too hot to handle, so to speak. All M class stars ever born are still burning, albeit dimly and will continue doing for another trillion years or so.

AFAIK.