500 years was just a number I threw out there as “clearly beyond any forseeable time”. It could be 200 years, 1000 years, maybe never. Point is just that it’s completely wrong to think that we just need to land on the moon or on Mars and then we’re an “interplanetary species” and if Earth goes, we have a backup plan.
500 years was just a number I threw out there as “clearly beyond any forseeable time”. It could be 200 years, 1000 years, maybe never. Point is just that it’s completely wrong to think that we just need to land on the moon or on Mars and then we’re an “interplanetary species” and if Earth goes, we have a backup plan.