What If You Died on Every Planet? (A Polite Tour)

On Venus you have minutes. On Mars, maybe fifteen seconds. A polite, fact-checked tour of how every planet in the solar system would kill an unprotected human - with NASA numbers, not movie physics. Comment: which space question should we answer next? Subscribe for a new question about the universe every day. 0:00 A polite planet-by-planet tour 0:36 Mercury: cooked, frozen, and irradiated 1:55 Venus: the fastest lethal surface 3:10 Earth: the one that doesn't 3:33 The Moon: vacuum next door 4:19 Mars: below the Armstrong limit 5:36 Jupiter: no ground to stand on 6:40 Saturn: same problem, prettier rings 7:14 Uranus and Neptune: ice giants, still fatal 8:02 Dwarf planets: cold vacuum footnotes 8:24 The ranking, politely Sources (checked 2026-10-16): NASA NSSDCA Planetary Fact Sheet (comparative): mean temperatures and surface pressures for Mercury, Venus, Earth, Mars, Uranus, Neptune. https://nssdc.gsfc.nasa.gov/planetary/fact... NASA Venus Fact Sheet: average surface temperature 464 C (737 K); surface pressure 92 bars; atmosphere ~96.5% CO2, sulfuric acid clouds (SO2). https://nssdc.gsfc.nasa.gov/planetary/fact... NASA Mars Fact Sheet: mean surface pressure ~6.36 mb (~0.6% of Earth); average temperature ~214 K (-59 C); atmosphere mostly CO2. https://nssdc.gsfc.nasa.gov/planetary/fact... NASA Mercury Fact Sheet / Planetary Fact Sheet: mean temperature ~167 C; surface pressure effectively 0. https://nssdc.gsfc.nasa.gov/planetary/fact... Armstrong limit (~6.3 kPa / ~63,000 ft): pressure where water boils at body temperature (U.S. Standard Atmosphere / NASA high-altitude flight references). NASA Ask an Astrophysicist / JSC vacuum-chamber accident (1965): ~14 s useful consciousness in near-vacuum; Bioastronautics Data Book on explosive decompression (TUC ~9-15 s). https://imagine.gsfc.nasa.gov/ask_astro/an... NASA NSSDCA Venera 13: surface survival ~127 minutes (1982). https://nssdc.gsfc.nasa.gov/nmc/spacecraft... NASA Galileo Probe: ~58 min descent; failed near ~22 bar (1995). https://science.nasa.gov/mission/galileo/ NASA Juno / Cassini / Voyager 2 / New Horizons / MESSENGER mission pages: no solid surface on gas/ice giants; Pluto surface ~40 K; Cassini end-of-mission 2017. Images and footage: NASA/JPL-Caltech Photojournal (MESSENGER Mercury; Magellan Venus radar; Mariner 10 Venus; Blue Marble Earth; Apollo Moon; Curiosity/Perseverance Mars; Juno Jupiter; Cassini Saturn; Voyager Uranus/Neptune; New Horizons Pluto). Magellan Venus views are radar-derived; some globe views and interior concepts are illustrations, not optical photos. Public domain (NASA) unless noted. Narration voice: synthetic (Kokoro TTS). #planets #space #nasa #venus #mars #jupiter #astronomy #whatif #theuniverseasks