How was the picture of the Milky Way taken?

The photos of the Milky Way are calculated by computer, not by aerial photography. Space camera is a precision optical instrument installed on spacecraft to photograph the earth, celestial bodies and various cosmic phenomena. In a narrow sense, it refers to a camera that shoots the earth. 1960 unmanned "mercury" spacecraft took a large number of color photos of the earth with space cameras. Since then, various types of space cameras have been used in artificial satellites and manned spacecraft.

Space cameras are mainly installed on remote sensing systems based on various spacecraft, mainly artificial satellites, including manned spacecraft, space shuttles, space stations and various planetary detectors.

Extended data:

Introduction to the galaxy:

The Milky Way is a rod-shaped galaxy where the solar system is located, including 65,438+0,000-400 billion stars, a large number of star clusters, nebulae and various types of interstellar gas and dust. Seen from the earth, the Milky Way is a silvery white ring around the sky. The total mass of the Milky Way is about10.5 trillion times that of the sun, which belongs to the local galaxy group. The nearest extragalactic galaxy is the dog dwarf galaxy, which is 42,000 light years away from the Milky Way.

The Milky Way is a oblate sphere with a huge disk structure, consisting of a bright and dense core, two main spiral arms and two unformed spiral arms, which are 4,500 light years apart. The sun is located on the arm of Orion, an arm of the Milky Way, and the distance to the galactic center is about 26,000 light years.

The center of the Milky Way is the complex and dense radio source Sagittarius A, and its position near the center contains a supermassive black hole (Sagittarius A*), which is considered as the central black hole of the Milky Way and the supermassive black hole closest to the solar system.

The Milky Way consists of silver core, silver core, silver disk, silver halo and silver crown from the inside out. Most of the central regions of the Milky Way are old stars (mainly white dwarfs), and most of the peripheral regions are new young stars. There are more than a dozen satellite galaxies around hundreds of thousands of light years, of which large magellanic cloud and small magellanic cloud are the largest. The Milky Way keeps growing by slowly devouring dwarf galaxies around it.

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