>Needs new propulsion like nuclear thermal or something to get to target distance in our lifetimes.
Here's a cool video describing solar sails that are supposed to be able to accelerate up to a final velocity of 22 AU/year, which get things to 550AU in 25 years.
Here's a cool video describing solar sails that are supposed to be able to accelerate up to a final velocity of 22 AU/year, which get things to 550AU in 25 years.
https://www.youtube.com/watch?v=NQFqDKRAROI&t=883s
This video was based on the paper: https://arxiv.org/abs/1802.08421