why astronauts never cry in space?
16921
Astronauts can't cry the same in space as they do on Earth. Your eyes make tears but they stick as a liquid ball. ... So — space tears don't shed." Unless an astronaut wipes that water away, tears in space can form a giant clump that can break free of your eye, as The Atlantic explained.
888205
Sound does not travel at all in space. The vacuum of outer space has essentially zero air. Because sound is just vibrating air, space has no air to vibrate and therefore no sound. ... Radio is a form of electromagnetic radiation just like light and can therefore travel through the vacuum of space just fine.
1073525
We cry in response to intense emotions of sadness, joy and laughter. Surprise, tear content is the same! Cortisol and adrenaline are released which help ease stress.
619715
There are a lot of reasons, besides having an immediate emotional response, why you may cry more than normal. Tearfulness is frequently associated with depression and anxiety. People often experience the two conditions at the same time. Certain neurological conditions can also make you cry or laugh uncontrollably.
1068027
The Short Answer: Earth's gravity is strong enough to hold onto its atmosphere and keep it from drifting into space.
110610
The first problem with that, is that it is really really REALLY difficult to ejaculate in space! ... NASA has tested astronaut's testosterone levels, and they generally drop when they're in space, and then return to normal once back on earth.
555742
(A) An astronaut standing on Earth does not feel weightless because the ground creates a normal force that opposes the force of gravity. (B) An astronaut orbiting the Earth does feel weightless because there is no ground or normal force to counteract the force of gravity. Thus, the astronaut is falling.
873470
At most, an astronaut without a suit would last about 15 seconds before losing conciousness from lack of oxygen. (That's how long it would take the body to use up the oxygen left in the blood.) Of course, on Earth, you could hold your breath for several minutes without passing out.
653312
It depends on how safe you want it to be. A box in free fall would work the same. The chamber NASA uses to train its astronauts must have cost a few million dollars. If you just want to create zero gravity inside the chamber and not put a human in it , then you could do it in a few thousand dollars.
630517
Gravity causes every object to pull every other object toward it. Some people think that there is no gravity in space. In fact, a small amount of gravity can be found everywhere in space. Gravity is what holds the moon in orbit around Earth.
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The resulting drop in pressure also exposed the crew to the vacuum of space — the only human beings to ever experience such a fate. They died within seconds of the rupture, which occurred at 168 kilometers (104 miles), making them the only human beings to die in space.
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Even the most modern of fighter jets cannot fly into space. ... Jet engines rely on air intake to function properly. Once you get above certain heights the air is too thin for jet engines to work efficiently so they end up shutting down.
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Outer space is not completely empty—it is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays.
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But here's the truth: Space is healthy and being alone does not mean that you are lonely. Emotional and physical space from your partner nurtures the relationship because it provides a sense of independence for both, and it makes your relationship stronger because it allows it room to grow and flourish.
37467
If you do die in space, your body will not decompose in the normal way, since there is no oxygen. If you were near a source of heat, your body would mummify; if you were not, it would freeze. If your body was sealed in a space suit, it would decompose, but only for as long as the oxygen lasted.
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In space no one can hear you explode… Many astronomical objects such as novae, supernovae and black hole mergers are known to catastrophically 'explode'. ... But as long as the explosion doesn't require oxygen, then it will work in much the same way in space as on Earth.
471411
Inside the International Space Station or a shuttle where it's not subject to the harshness of space it wouldn't have a problem and indeed astronauts are known to take phones with them. A smartphone can even fare pretty well as part of a satellite if STRaND-1 and PhoneSat are anything to go by.