Foreign media have alien creatures. What do you think of aliens?

They may look like us humans, with faces, facial features and limbs. Walk upright like a human. Although we have not all seen alien creatures, we have had too much imagination about them. There are all kinds of strange looks.

It may also be four unlike, completely opposite to human beings. No eyes, ears, nose and mouth, no limbs. They don't have everything that human beings have externally. For example, human beings see through their eyes, but not through their eyes, but through induction or something else, so they don't need eyes.

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There have always been daydreams about aliens in ancient and modern times, but now humans can't actually detect whether there are aliens, although many people have always claimed to witness aliens visiting the earth.

Even contact with themselves, but most scholars and experts believe that the so-called different degrees of contact between humans and aliens is actually a psychological effect. The chances of humans discovering "aliens" are very small. Even if aliens are found, it is almost impossible to have any contact with them.

As of 20 15, the scientific community generally believes that "life will only appear on planets around stars that can emit light and heat, but not all stars necessarily have planets".

According to nebula theory, stars are formed by the contraction of rotating primitive nebulae. During contraction, due to the conservation of angular momentum, the rotation is accelerated, and the nebula is gradually flattened due to centrifugal force. When the central temperature reaches 7 million degrees, a thermonuclear reaction from hydrogen to helium occurs and stars are born. In this process, the outside of the disk will condense into several small celestial bodies-planets.