00:00140 million miles from Earth, one tiny crack, and you're already dead.
00:09On Mars, the pressure is so low, your blood can literally start boiling.
00:15You won't survive more than two minutes.
00:19A planet with volcanoes taller than Everest, and canyons big enough to swallow entire countries.
00:26Warm days, frozen nights, minus 125 degrees, and invisible cosmic radiation raining from
00:37the sky every second.
00:40Yet, humanity still dreams of building a second Earth here.
00:46Imagine, you are one of the first humans to step onto Mars.
00:52Today, we begin a terrifying journey.
00:56To survive 24 hours on the dead red planet.
01:02What will you eat?
01:03How will you breathe?
01:05How will you stay alive?
01:08We'll explore the futuristic technology keeping humans alive on Mars.
01:15But one mistake, and you will never return to Earth.
01:19So buckle up, and prepare for the most dangerous survival story in space.
01:33You've crossed 140 million miles of empty space to get here.
01:40As the landing cables release and you finally reach the surface, the overwhelming quiet of
01:46a dead world takes over.
01:48You open the airlock, look out at the barren red dirt stretching to the horizon, and take
01:54your first physical step onto the surface.
02:03Mars holds about 38% of the gravity you're used to.
02:07On Earth, a standard standing jump might get you three feet off the ground.
02:11Here, using that same leg strength, you launch yourself eight feet into the air.
02:17You feel light and agile.
02:19Your heavy gear, which would be cumbersome on Earth, feels like a thin jacket.
02:23This physical lightness is the only welcoming aspect of the environment.
02:29As you move further from the lander, you begin to encounter the factors that make this planet
02:34hostile to human life.
02:37Right outside the glass of your visor is an invisible poison.
02:41The Martian atmosphere is 95% carbon dioxide.
02:45If your suit were to leak, the inability to breathe that CO2 is actually a secondary concern.
02:52Long before you suffocate, the lack of atmospheric pressure would trigger a violent physiological
02:58reaction.
02:59The pressure on the surface is so low that it falls below the Armstrong limit.
03:05At this level of pressure, the boiling point of liquids drops below the temperature of the
03:10human body.
03:11Without a pressurized suit, the water in your blood and tissues would instantly change states,
03:17turning into gas bubbles that expand throughout your circulatory system.
03:21Without protection, a human survives for approximately two minutes.
03:27Survival on Mars requires placing absolute faith in the millimeter-thin layer of synthetic
03:32fabric that maintains your internal pressure.
03:36By midday, as you explore the surface, the immense scale of the landscape becomes visible.
03:43Standing before you is Olympus Mons, the largest volcano in the solar system.
03:49It's 21 kilometers high, three times Mount Everest.
03:55Its base is so wide, the peak curves out of sight over the horizon, making the mountain appear
04:02to be the ground itself.
04:05Nearby lies the planet's most prominent scar, Valles Marineris.
04:11This canyon system is ten times longer and seven times deeper than the Grand Canyon on Earth.
04:18But, while these landmarks are massive, they offer more protection from the microscopic invisible threats
04:26raining down on them.
04:28Mars lacks both a global magnetic field and an ozone layer.
04:32This allows unfiltered ultraviolet rays and cosmic radiation to strike the surface directly,
04:38like a constant rain of invisible particles.
04:42The geological majesty of the planet is matched by this radiation.
04:47Without heavy shielding or living underground, long-term surface exposure leads to lethal levels of cellular damage.
04:54By the afternoon, your focus shifts to logistics.
04:58You are constantly burning through the finite supply of oxygen stored in your tanks.
05:04To sustain a long-term presence, NASA developed a hardware solution called MOXIE.
05:09This gold box-shaped instrument acts as a mechanical tree.
05:13It pulls in toxic Martian carbon dioxide and uses heat to crack the molecules, releasing pure breathable oxygen.
05:22Human life on Mars isn't achieved through biological adaptation,
05:26but through the continuous active processing of the planet's toxic air into something we can use.
05:32As the sun drops toward the horizon, the daytime cycle ends with a visual phenomenon unique to this world.
05:39On Earth, the atmosphere scatters red light during sunset.
05:43On Mars, the ultra-fine dust in the thin air scatters blue light instead.
05:48Seeing a blue sunset is a striking, quiet reminder that the most basic environmental cues you grew up with no
05:55longer apply.
05:56When the sun disappears, the ambient heat vanishes instantly and the Martian night begins.
06:04Temperatures crash to negative 125 degrees Celsius.
06:08At these extremes, carbon dioxide actually freezes out of the air, turning into solid dry ice that blankets the ground.
06:17There is no margin for error in this code.
06:21If the power supply to your suit's heater fails for even a moment, your body temperature would drop to lethal
06:27levels in seconds.
06:29You have now completed a full 24-hour cycle on the red plant.
06:35We have the technology to survive here for one day.
06:38But turning Mars into a permanent home means maintaining that technology against a relentless environment where a single mechanical failure
06:47means death.
07:04You have now completed a process of a emotional ability to achieve plenty of needs and the所有 technology against a
07:06vertical house.
07:06There is no danger to the present surface of the craft that theárias needs to be of the volt and
07:06the buffer.
07:06There is no harm.
07:06There is no harm.
07:08There is no harm.
07:10There is no harm.
07:11There is no harm.
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