Orion Nebula

Orion Nebula The Orion nebula contains one of the brightest cluster in the night sky. The number of nebulae is 4 and can be easily seen from the northern hemisphere during the winter. But surprisingly, the area was not recorded by French lawyer Nicolas-Claude Fabrie-de-Pirescu by 1610. On 4th March 1769, Charles Messier introduced the Orion Nebula (M42) to his star list. Then in 1771, Messier published the list of the first articles he published in the academic apocalypse 1 The Orion nebula is one of the nearest stars of the Earth.

The Orion nebula is one of the nearest stars of the Earth. Using disparity measurements, it is estimated that this nebula is only 1500 light years apart. In addition, the Orion nebula is a relatively young cluster of less than one million years. Some even guessed that some young stars in the cluster are only 300,000 years old. The Orion nebula is a radial nebula because it contains O type stars and B type stars. These hot stars emit ultraviolet light (UV) that ionizes surrounding hydrogen atoms into protons (H +) and electrons (e -). When the protons and the electrons are recombined, the electrons enter a higher energy level (n = 3). Then, when electrons fall from the n = 3 level to the n = 2 level, H photons are emitted. Two photons have a wavelength of 6563 angstroms and thus correspond to the red part of the visible spectrum.

This nebula is a gas cloud (hydrogen) and dust of the universe. Nebula is the birthplace of a star. Nebula has various kinds. A firing nebula like the Orion nebula emits a bright sparkle when excited by a gas-formed star. In the reflective nebula, the light of the star reflects the particles of the dust of the nebula. The nebula around Ple Pleiades is a typical reflective nebula. Dark nebula also exists. These are dense clouds of molecular hydrogen that partially or fully absorb the light from the stars behind them. Orion's horse head nebula