Titan Has Air Thick Enough to Skip a Pressurized Spacesuit
Titan has surface pressure about 1.5 times Earths, so a human would not need a pressurized suit there, but would still need oxygen and extreme cold protection.
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Titan, Saturns largest moon, has one of the strangest atmospheres in the solar system. At its surface, the air pressure is about 60 percent higher than Earths, similar to the pressure felt roughly 15 meters underwater. That means a person on Titan would not need a suit whose main job is to keep their body from being crushed by low pressure. The surprising part is that this does not make Titan safe to visit. The atmosphere is mostly nitrogen and methane, not breathable oxygen, so a human would still need an oxygen supply. The surface is also brutally cold, around minus 179 degrees Celsius, cold enough for water ice to behave like rock. Titan is especially unusual because its thick atmosphere supports a cycle involving clouds, rain, rivers, lakes and seas, but the liquid is methane and ethane rather than water. So the headline idea is technically about pressure, not comfort: Titan could let you stand at the surface without a pressurized spacesuit, while still requiring serious protection against the cold and a lack of breathable oxygen.
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