APHY103 SUNY at Albany Problems Encountered by Human Beings in Space Paper

Question Description

The first problem that human beings have to overcome when entering space is naturally gravity. The first cosmic speed of the earth is 7.9 km / s. to reach this speed, we can fly around the earth without falling down. To get rid of the gravity, we must reach 11.2 km / s.

The second problem is temperature. Because there is no air to cycle the heat, the temperature will rise very high on the side facing the star, and the side facing the star will cool down very quickly due to the heat radiation. The temperature difference between the sunny side and the sunny side will be very terrible in a short time.

The third question is high vacuum, which is easy to understand? In space, the number of atoms or molecules per unit volume is extremely rare, and the atmospheric pressure is zero. In this case, people will die if they go out

The fourth problem is high radiation. In addition to projecting visible light to us, the sun also releases a large number of electromagnetic waves and high-energy particles (commonly known as solar wind) into the universe. The electromagnetic waves are good. As long as the wavelength is not particularly low, the damage to the human body is not great, but the high-energy charged particles are not always terrible. They can penetrate the human body, and can destroy the DNA in cells, leading to the loss of human cells Ability to disintegrate (radiation sickness, very sour)

The sixth problem is air. Space is a high vacuum. To breathe, one must maintain a normal atmospheric environment, including air pressure, oxygen content and composition.

The seventh problem: Food: the food source in space is extremely scarce. At present, it can only be supplied by the earth. Without the earth, there will not be enough food produced in space.

The eighth problem: physiology and psychology, the living environment in space is very narrow, there are not many people, and the noise of spaceship is quite large at present (watching the video feels like the noise at the wing of the aircraft). Being in this kind of environment for a long time is a great test for human psychology. In addition, the human body is evolved under the gravity environment, and although the body skills are highly adaptable, they are very easy to guide under the weightlessness condition It can cause bone calcium loss, inadequate blood circulation, muscle atrophy and other problems.

The ninth problem: weightlessness. In the weightlessness state, in addition to the changes in the physiological structure of the human body, people's sense of space will produce confusion, light will not be able to distinguish up and down, heavy will produce a serious sense of vertigo, and people without weightlessness training will suddenly experience weightlessness, there will be an illusion of infinite fall.

The tenth problem: acceleration. At present, in order to accelerate and maintain the orbit as soon as possible, the speed of human spacecraft is usually much higher than the first escape speed. In a few minutes, the acceleration of 0 meters per second is nearly 8 kilometers per second. The acceleration is very large. People with weak physique are estimated to faint in a few seconds. In addition, the huge noise and vibration during the launch is an extreme test for human body.

Final Answer

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Running head: HUMANS IN SPACE

Problems Encountered by Human Beings in Space


Problems Encountered by Human Beings in Space

A thousand years ago, our ancestors walked all over the continent and sailed over
tremendous distances. Beyond, human beings have visited the space, the moon, and stars. The
space is more hostile to human beings than just ‘showing off the shore of the Indian ocean.’ It
entails a great deal of finances and technology as the voyages venture into dangerous journeys to
explore beyond the horizon. This paper will, therefore, explore ten highlighted problems faced by
people while proposing possible solutions.
The Problem of Gravity
Overcoming natural gravity is the first problem voyages face in space. Scientists have
established that the primary cosmic speed of the earth is 7.9km/s. Humans must reach a speed of
11.2km/s or approximately 25.000 mph to move around the earth without falling down. This is the
gravitational drag. To move away from the earth is like getting divorced more; the more you want
to travel quickly in space, more powerful forces such as gravity conspire the object. Technically
speaking, the sensation of weightlessness does not exist, but the effect of the inability to bear
weight has long term effects, according to The Space Publication (2017). Astronauts may not feel
the impact of weightlessness, but it is associated with many muscle and bone weaknesses in the
long term when the astronaut's feet feels relaxing. In the short run, when astronauts land, they get
confused because the body is unable to fight gravity (Forbes.com. 2017). There is a disorientation
of the proprioceptive system that causes arms and legs to lose track. The problem of zero gravity
can be solved by the inception of artificial gravity. According to Forbes publication (2017), an



artificial gravity can be created by spinning the space station such that centrifugal forces push
inhabitants outside to simulate some gravity.
The Temperature Problem
In the space probably in the planet or the moon, temperatures will be too hot or too cold,
which means a lot of energy is being used to change the temperature. As highlighted, the inside
facing the star will have very high temperatures while the side facing away will have very low
temperatures because their is no air to cycle the heat exchange. Crawshaw (1976) highlighted the
effects of temperature changes on human bodies. When temperatures drop as low as 2.7K, the
body may experience a weakened immune system because viruses and influenzas are more
prevalent in the cold. Moreover, high-temperature changes may exacerbate peripheral vascular,
coronary heart diseases, respiratory ailments, and brain vessel diseases. Scientists have found a

Thomas574 (17037)
UC Berkeley

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