Launch Pad, Day Five: Mike Brotherton on Summing Up Stars, and Moving on to Galaxies

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OK, let's get back to the destruction of the Earth.

The fate of our sun and the end of the earth–earth will be incinerated when the sun becomes a red giant, unless we find a way to move the earth. We have about five billion years before that happens.

Now let's talk about massive stars, stars greater than four solar masses.The most massive stars can continue fusing elements and releasing energy all the way to iron. The most massive O stars can ...