Yeah, define 'known universe'. Due to the ever faster expansion over 90% is not even visible, any more(=combined speed is over speed of light). In the lo........ong run only our Milky way + Andromeda are relevant for search(The latter is the one and only galaxy coming closer).
If no wonder happens, we won't live to see earth 2.0 (except we reincarnate our own planet. No other planet in this solar system has the approximate mass + a magnetic field(not to mention habitable zone)).
But don't forget: In 100 Million years our sun shifts one gear up. Then warming your home won't be an issue, any more.
Have a sunny day!