Leaving Earth requires establishing self-sufficiency in space, requiring a massive logistical overhaul: Leaving Earth | MARS: How to Get to Mars
The inherent drive to explore, with a focus on long-term colonization of Mars. The Technological Hurdles Leaving Earth
Proactive measures against existential threats like asteroid impacts or severe nuclear events. or fleeing from
Addressing, or fleeing from, irreversible environmental degradation, as discussed in. irreversible environmental degradation
While Earth remains our only home, scientists and experts discuss several motivations for becoming an interplanetary species: