Unlimited in space can accelerate? There is no air resistance, stable acceleration objects can approach infinite speed? of course not! According to relativity, mass of a body increases as velocity increases sharply, the closer the more difficult to accelerate the speed of light. Accelerate to the speed of light require an infinite energy, which is impossible. For example, the Large Hadron Collider, even if only a small proton infinitely close to the speed of light.
Side of the moon never see the sun? Due to tidal locking, we always only see one side of the moon. We never see the other side of the moon does not mean that the other side will never see the sun. In fact, because the moon revolves around the Earth, the Moon will be in every part of the sun shine. For example, the first day of each month when the moon is fully illuminated by the sun on the back.
If you do not wear spacesuits in space it will immediately be frozen? Although the space is very cold (near absolute zero) but only through the interaction of heat transfer particles, since there is no space particles will absorb your body heat, your body temperature will be gradually reduced to a space temperature.
Space has voice? There is no air in space, carrying no fluid vibration and, therefore, can not hear the sound. So you not only hear the sound of weapons in science fiction movies, but also hear the sound through the spacecraft.
Space can burst into flames? We all know that there is no air in space and in a state of weightlessness, so what you see in the movies spacecraft explode in flames scenes are wrong. In fact, because a small amount of gas in the cabin, transient combustion is possible, but not more prosperous.
Astronauts in space without gravity? In fact, the only astronaut to experience zero gravity or gravity to reduce the feeling of it, similar to a free fall. If gravity is not, then it will not fly around the Earth and out movement.
Similar atmospheric pressure on Earth and Mars? Because Mars' atmosphere is very thin, only 1% of the Earth's atmospheric pressure. Over time, you will encounter issues such as decompression sickness, blood gas slowly inflated.
Astronauts usually by means of free-flying jet equipment? While compressed air jet device enables astronauts more mobile, but this means the movie is not as commonly described. In reality, such a device is generally regarded as a last resort, only when the astronauts found themselves out of the safety device and the spacecraft drifted away only when in use. And you can not carry enough compressed gas will push you very far.
Difficult to cross the asteroid belt? "Star Wars" got us into a common misconception in the asteroid belt. Although they are the standards of space it is very dense, but in fact, the distance between them can reach thousands of thousands of kilometers.
Soviets use a pencil in space? Have you heard this story: NASA spent millions and several years developing Space Pen, but the Russians have been using a pencil. In fact, in orbit pencil debris will float in the air and intake air recirculation system, in order to avoid inhalation of contaminated air purifiers and graphite, is not to use a pencil.
Licensing and commercial cooperation, please contact zhidaoribao@baidu.com, Baidu know the daily chase responsibility and rights reserved.
Article Source: Baidu know daily (http://zhidao.baidu.com/daily)
Original link: http: //zhidao.baidu.com/daily/view id = 3837?