Final answer:
Humans could not survive on Neptune due to extreme temperatures, the composition of its atmosphere, and the high pressure.
Step-by-step explanation:
Humans could not survive on Neptune due to several reasons:
- Extreme temperatures: Neptune is the coldest planet in our solar system, with temperatures dropping as low as -350 degrees Fahrenheit (-220 degrees Celsius). These frigid temperatures would be unbearable for humans, as our bodies are not adapted to survive in such extreme cold.
- Atmospheric composition: Neptune's atmosphere is composed mainly of hydrogen and helium, with traces of methane and other gases. The lack of oxygen and the high concentration of gases that are toxic to humans would make it impossible for us to breathe.
- High pressure: The atmosphere of Neptune is incredibly dense, with pressures thousands of times greater than that on Earth. This immense pressure would crush a human body, causing it to collapse.