Appreciation of science fiction paintings in space?

The space universe is so mysterious that now we can only understand space through fantasy. I have sorted out the science fiction paintings in space, welcome to enjoy them!

Space science fantasy shows science fiction painting in space, exquisite space science fantasy and interesting space knowledge.

1. Black holes don't "inhale" matter.

In many movies or written works, it is often described as follows: "Black holes suck everything around them ...". In fact, some time ago, when CERN implemented its large hadron collider, many people were worried that it would create miniature black holes and "swallow" the whole earth in an instant! But in fact, black holes really don't "inhale" matter.

Strictly speaking, the action of "sucking" is a bit like the working principle of a vacuum cleaner. But that's not how black holes devour matter. When the vacuum cleaner works, a fan will create a regional vacuum environment at the back of the vacuum cleaner. In fact, it is only a regional low-pressure area. When a large amount of outside air is inhaled due to pressure difference, garbage is also inhaled.

For a black hole, there is no action of "sucking". In fact, the matter around the black hole is attracted by strong gravity. So these substances are more like "falling" into a black hole than being sucked in by a vacuum cleaner. Gravitation is one of the basic forces of nature, and all substances have gravitational characteristics. This difference seems subtle, but from a physical point of view, there is an essential difference between the two.

You can see objects at least 30 billion kilometers away.

On a clear night, your eyes can easily exceed19,000,000,000,000 miles * * about 306,000,000,000 kilometers * *. This is probably the distance to Cygnus α * * Tianjin Si * * *. This is a bright star that forms a summer triangle with the Cowherd and the Weaver Girl. Tianjin IV is so bright that the whole northern hemisphere can see it. In fact, it can be seen in almost all inhabited places in the world.

There is also a star, which is the base of Haishan II. It's more than twice as far as Tianjin. But the star was dim, so it didn't attract much attention. In fact, there are some galaxies that you can see directly with the naked eye, such as Andromeda galaxy and triangle galaxy, and their distance is quite amazing. The Andromeda galaxy is about 2.5 million light-years away from the Earth, while the triangle galaxy is more than 3 million light-years * * 1 light-year, which is about 9.46 trillion kilometers * *.

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