Removing mass from the sun? That’s a new one on me. If mankind is around in millions of years I assume they’ll be able to adjust the orbit of the earth as the sun expands.
One of the podcasts I download is from the Hubble Site. Can't remember when, since I did d/l all the archives at the time, but I'm 99% sure that's where I heard it.
Moving the planet? Assuming it could be done, that's really going to mess up growing seasons, faking your age on ids and bios, what happens to "expires one year after date..."
I was thinking shrinking the Sun would require the planet shrinking it's orbit, too.
Expanding it would put it closer to the asteroid belt.