They would quickly die of asphyxiation due to the lack of air and the astronauts blood would boil because there is very little pressure in space so this would lower the boiling point of your blood causing it to boil quicker at a lower temperature this would also contribute to killing the astronaut.
An astronaut would be in a sealed spacesuit when out of the spacecraft and standing on the Moon's surface. So he or she would be able to sneeze (within the confines of the spacesuit).
On Ganymede, which is a moon of Jupiter, the acceleration due to gravity is about 1.428 m/s^2. To find the weight of the astronaut's spacesuit on Ganymede, you would multiply the mass of the astronaut by the acceleration due to gravity on Ganymede. Therefore, the weight of the astronaut's 900kg spacesuit on Ganymede would be about 1286 N.
He/she would suffocate and/or freeze.
An astronaut landing on Pluto would need to wear a spacesuit that is not much different from those used now for spacewalks in orbit of Earth.
If a flying piece of debris were to rip a hole in a spacesuit during a spacewalk, it could lead to a rapid loss of air pressure. The astronaut would experience decompression sickness and could potentially lose consciousness. Immediate actions would be needed to prevent further harm, such as quickly locating and repairing the hole or returning to the spacecraft.
The astronaut would need to be rescued. There is no way to get back to Earth from orbit in only a spacesuit.
If a human were exposed to the vacuum of space without a spacesuit, they would experience rapid decompression, leading to the expansion of gases in their body. This would cause their blood to boil, their tissues to swell, and ultimately result in unconsciousness and death within a few minutes.
If an astronaut is subjected to extremely low pressures, such as in outer space without a spacesuit, the blood may start to boil due to the lack of atmospheric pressure. This can lead to gas bubbles forming in the bloodstream, potentially causing serious harm to the astronaut's circulatory system and vital organs. Immediate medical attention would be needed to prevent serious injury or death.
If you were to go to Mars without a spacesuit, you would be exposed to the harsh conditions of the Martian environment, including extreme cold, low atmospheric pressure, lack of oxygen, and high levels of radiation. This would quickly lead to hypothermia, suffocation, and ultimately death within seconds to minutes.
you'd die You would die from the thin atmosphere and extreme temperatures.
There is no oxygen you would die.
No, it would not be possible to go outside on Pluto without a spacesuit. Pluto's thin atmosphere consists mostly of nitrogen, methane, and carbon monoxide, which is not breathable for humans. Additionally, the extremely cold temperatures on Pluto, averaging around -375°F (-225°C), would be deadly without the protection of a spacesuit.