WORLD PROFILE / The original human habitat

Earth

Our home world provides the baseline for human life.

Known environmental science

Known science: Earth's atmosphere is mainly nitrogen and oxygen. Humans need water, food, suitable temperatures and adequate oxygen partial pressure. Natural human appearances vary widely.

Long-term inherited changes to human anatomy on other worlds are unconfirmed. A gas percentage alone does not determine a face, skin color or body shape.

Scientific source ↗

Replaceable concept illustration of Earth — AI-created science-fiction concept artwork / not a mission photograph

Your possible planetary self

Prepared generic-human scenarios

Generic human explorer concept illustration for Earth

Known science

The human baseline

A familiar human, shown as a neutral illustrated baseline.

View scenario ↗