2 ms·
You are very optimistic if you are talking about "cities" in that timeframe.
by outworlder 7y ago
You are very optimistic if you are talking about "cities" in that timeframe.
- russdill 7y agoMeh, the sun will grow warmer but won't enter it's red giant phase until about 5 billion years from now. Placing reflectors in a lagrange point to control the amount of solar energy reaching Earth with be child's play. Even once it enters the red giant phase, it'll be several hundred million years before it consumes Earth.