It’s also a telescope. Why does the Hubble Telescope have to launch into the universe? Do you know why?

People often say, “without the birth and development of astronomical telescopes, there would be no modern astronomy.” It can be seen that telescopes are very important tools for observing celestial bodies.

It is no exaggeration to say that astronomical telescope is the eye of human beings looking at the universe. It can enable us to explore the universe more comprehensively, more directly and clearly, and rapidly promote human’s understanding of the universe.

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With the development of science and technology, the performance of astronomical telescope is constantly improved. The most outstanding representative of astronomical telescopes is undoubtedly the Hubble telescope.

The Hubble telescope is one of the “best” of many observation devices. It is also very special. What’s special about it? Scientists sent it to the universe, but it’s also a telescope. Why does the Hubble Telescope have to be launched into the universe?

Limitations of ground-based telescopes

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For astronomy enthusiasts, the most simple, convenient and inexpensive way to explore the Unknown Universe is to use astronomical telescopes.

The multiples of ground-based telescopes are relatively large, and the multiples of most telescopes can reach 50 to 100 times, or even more than 200 times.

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It is mainly used to observe celestial bodies, to see the universe farther and clearer, and occasionally to observe ground targets with low power eyepiece.

However, the ground telescope also has its fatal weakness, that is, it will be interfered by many factors of the earth.

Interference factor 1

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There is an atmosphere on the earth, and atmospheric turbulence is a very common natural phenomenon in the atmosphere, because the air temperature in different regions is uneven.

As a result, the material distribution in the atmosphere is also uneven. As long as there is any light, sound wave, radio and other propagation, it will be disturbed and can not be seen clearly.

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Interference factor 2

Because of the existence of the atmosphere, the ionosphere and ozone layer play an important role in protecting the earth. They absorb high-energy rays and ultraviolet rays very strongly. But just because of this, a lot of information cannot be obtained.

Interference factor 3

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If the weather conditions are not good and the sky is covered with dark clouds, it will also have a great impact on the observation of ground-based astronomical telescopes.

The advent of the Hubble telescope

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Because of the imperfection of the ground telescope, the Hubble telescope came out. The Hubble telescope is a telescope in earth orbit in the name of astronomer Edwin Hubble.

The Hubble Space Telescope was launched on April 24, 1990, and it has been 30 years since April 24 this year. In these 30 years, it has been continuously sending beautiful images of the universe back to the earth.

It is located above the earth’s atmosphere, and will not be disturbed by atmospheric turbulence, nor will it be unable to detect information because the ozone layer absorbs most of the ultraviolet light.

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The Hubble Space Telescope can receive commands from the earth’s ground control center and transmit the data and information detected in space back to the earth.

Although there were some small problems with the Hubble telescope during its operation, it was corrected by scientists and returned to normal.

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Now it is a very important observation instrument in the history of modern astronomy. It makes up for the shortage of ground-based telescopes, helps astronomers solve many basic problems in astronomy, and makes human beings lucky to touch the mystery hundreds of millions of light-years away.

Although the Hubble Space Telescope costs 2.1 billion US dollars, it takes more than 40 years to put forward the preliminary concept, design and complete the construction.

But the data it brings back allows scientists to measure the speed of the expansion of the universe, to look back in 97% of the universe in time to observe the birth and evolution of stars and galaxies, and to help us have a better understanding of black holes. From these results, it is very worthwhile.

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What do you think of that? Welcome to comment area.

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