How was the planet Pluto discovered? Detailed answer

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How was the planet Pluto discovered? Detailed answer

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How was the planet Pluto discovered?

If you think it's hard to find a needle in a haystack, then you should think about how you can "find" the planet Pluto. It is the most distant planet in the solar system, and is about forty times farther from the Sun than Earth. You need a very large telescope to see Pluto. And yet the planet was somehow open. How did it happen? There are two sets of laws that allow you to obtain information about the size of the planets and the distances to them. Kepler's laws relating to the motions of the planets prove that the orbits of the planets around the sun are not in the form of a regular circle.

Newton's law of gravity allowed astronomers to determine the weights, sizes, and masses of the planets. The law states that two bodies attract each other with a force that depends on the amount of material in each body (its mass) and the distance between them. The greater their mass, the stronger the attraction; the closer they are to each other, the stronger the attraction. Armed with these laws, two men in 1846 noticed something unusual about the behavior of the planet Uranus, then considered the most distant planet in the solar system. Uranus did not move in its orbit as one would expect, having corrected for all the known planets.

From the way Uranus moved, it could be concluded that another planet was affecting its trajectory, and to determine the location of this planet. One of these people asked the Berlin Observatory to look for a new planet in a certain part of the sky, and it was discovered there. The new planet was named Neptune. The American astronomer Percival Lowell believed that the movement of Uranus was influenced by another planet located beyond Neptune. This was in 1915. Other astronomers have felt that Neptune itself is being influenced by some planet behind it.

Thus, a systematic search for another planet began with the help of a telescope and the study of photographs. On February 18, 1930, astronomer Tombaugh, who was studying photographs in search of a new planet, discovered it - near the place predicted by Lowell! This was Pluto.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why did some ancient cities end up under layers of earth and where did it come from?

The reason for the burial of some ancient cities (as well as many other creations of human hands) under the layers of the earth are several factors acting, as a rule, together.

One is windblown dust, ranging from ash from volcanic eruptions to ordinary household dust. Accumulating for a long time, layers of this dust hide various objects under them.

Another factor is the deposits of sand or clay formed by water flows - river, rain, mudflows, as well as floods.

Hills often form over adobe settlements. Short-lived (on average, about 60 years) buildings, collapsing, serve as the basis for new ones, and the settlement grows in height.

This process, combined with the accumulation of waste, is capable of bringing a hill (tell, or tepe) to a height of 30 meters or more.

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Previously, only Highscreen Boost, the only smartphone in Russia with a 4 mAh battery, could boast of such autonomy. Scheduled for September, the Boost 160 model, according to our data, will have to set a new record for battery life - up to two weeks.

Highscreen Alpha R is equipped with a 5-inch display with a resolution of 1920 x 1080 pixels. OGS (One Glass Solution) technology is used: due to the absence of an air gap between the matrix and the sensor layer, viewing angles and "readability" in natural light are improved.

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