Retaining Earth's Habitability Beyond the Life of the Sun
The paper proposes megaengineering solutions to ensure Earth's habitability for 9.1 million billion years by addressing seven long-term threats, including solar luminosity and tectonic instability. Solutions involve star lifting, luminosity replacement with gas giant energy, artificial heat injection via antimatter, water sourcing from Jupiter, orbital replication of seasons, and shielding against external cosmic hazards.