Since the 1940s, a luminous elliptical disk aircraft has been discovered over the United States. At that time, the newspapers called it “elliptical illuminant”. This is the beginning of contemporary interest in UFOs. Later, people focused on UFO reports all over the world. UFO originated from the blue book program of the US air force. The first person in charge of the program was Captain Edward Rupert, who officially invented the word “UFO”.

UFO phenomenon can be divided into four categories: misunderstanding of known phenomena, unknown natural phenomena and unknown natural creatures. The fourth category refers to the flying saucer, which has obvious intelligent flying ability and is not made by the earth people.

Source: @_marcoscortez

Submarine is a kind of ship that can walk underwater. The earliest submarine appeared before the first World War. It was widely used at the beginning of the first World War. With the explosive development of modern science, submarines have changed from the earliest manual drive to diesel electric power, and then to the present nuclear power. At present, the major military powers in the world have the underwater combat power of nuclear submarines and conventional submarines.

As far as the current world is concerned, there are many strategic weapons and equipment necessary for powerful countries. Nuclear submarines are one of them. To some extent, the strategic significance of nuclear submarines has surpassed that of aircraft carriers. Nuclear submarines are not only a symbol of a country’s strong navy, but also a symbol of a country’s strength, and their strategic significance is extraordinary.

Source: @americannightmaretattoo

The civilization of human society originates from river culture. The development of human society accumulates River culture, and the life of River culture promotes social development. River culture, as a type of human culture and civilization, has been recognized by people for a long period of time. People call it “River civilization”.

River is an important part of life on earth and the basis of human survival and development. River is one of the most basic forms of existence in diverse ecosystems on the earth. In history, the occurrence and development of human and its social ecosystem are closely related to the interdependence of rivers.

Rivers not only produce life, but also breed and produce human culture. The life problem of rivers is not only related to the reproduction, survival and ecological stability of terrestrial aquatic organisms, but also directly affects the spiritual belief, spiritual image and taste symbolic significance of human beings in the long-term historical tradition.

Source: @_phoenixtattoo

It is said that Taurus is a very conservative constellation, but Taurus people like to dress up themselves, who let the patron saint of Taurus is Venus? Today I bring you a beautiful Taurus tattoo and its meaning.

In Greek mythology, it is said that the princess oropa is very beautiful. One day, oropa was playing at the seaside. Zeus turned into a white bull and appeared at the seaside where oropa was playing. Unwittingly, oropa felt very curious, so he rode on the white bull and fell in love with Zeus, the incarnation of the bull. Finally, because the white bull contributed to this marriage, Zeus thought it had merit, so he put it in the sky to become Taurus.

Taurus is warm-hearted and sincere. Compared with challenging adventure, Taurus is more suitable to choose sunny avenue to spend a safe life and has a personality beyond ordinary people. Having the qualities of being steady and caring for others always makes people feel at ease and dependent.

Source: @agophobia_tattoo

Jupiter is the largest planet in the whole solar system. It’s about the size of 1300 earths. A more incredible fact is that Jupiter is 2.5 times larger than all the other planets in the solar system.

From time to time, however, it has been asserted that Jupiter is made entirely of gas. This view is true in a way. About 90 percent of Jupiter is made of hydrogen, and the remaining 10 percent is helium. In addition to these gases, scientists also detected traces of water vapor, methane and ammonia.

Scientists are still not sure how our solar system came into being. Our best guess is the core accretion model, according to which the sun and its planets are formed by a cloud of hydrogen – and helium rich dust (remnants of the nebula).

Source: @_mfox