Can You Survive On...?
Pick a destination. Find out how you'd die.
Test your space survival instincts with realistic emergency scenarios — what do you do when your spacesuit loses pressure? How do you handle a fire on the ISS? Each scenario is based on real astronaut training protocols. Work through branching decision scenarios drawn from actual NASA emergency procedures. Your choices affect your crew's survival odds, and you'll learn the real correct answer after each decision point.
💡 ISS crew members train for fire, depressurisation, and toxic atmosphere emergencies regularly — the first response to smoke is always to don oxygen masks before anything else.
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Frequently asked questions
How long can a human survive in space without a suit?
Roughly 15 seconds before you lose consciousness from oxygen deprivation, and about 90 seconds before brain damage becomes irreversible. You will not freeze or explode — vacuum is a poor heat conductor, and your skin holds your body together. The lethal effects are hypoxia, ebullism (water boiling at body temperature) and decompression sickness.
How long would I survive on Mars without a spacesuit?
Less than two minutes. Mars's atmospheric pressure is about 0.6% of Earth's, low enough that your blood would boil at body temperature (the Armstrong Limit). You would also asphyxiate in the 95% CO₂ atmosphere and freeze rapidly in nighttime temperatures of −80°C. A pressurised suit and habitat are required at all times.
What is the deadliest planet in the solar system?
Venus is the worst — surface temperatures of 465°C melt lead, atmospheric pressure of 92 bars is equivalent to being a kilometre deep in Earth's ocean, and the sky rains sulphuric acid. A human would last seconds at best. Jupiter is also lethal due to crushing pressure and extreme radiation, but Venus would kill you fastest.
What does NASA train astronauts for?
ISS crew train extensively for fire, depressurisation, toxic atmosphere, medical emergencies and EVA suit failures. The first response to smoke is always to don oxygen masks before troubleshooting. Crew members rehearse emergency procedures every six months and complete underwater EVA simulations equivalent to seven hours of spacewalking per training session.