Have you ever wondered how stars are formed in the Galaxy?
The answer can be found by looking into the night sky at The Orion Nebula. It is an example of a stellar nursery where new
stars are being born. Observations of the nebula have revealed approximately 700
stars in various stages of formation within the nebula.The Orion Nebula (also known as Messier 42, M42, or
NGC 1976) is a diffuse nebula situated south of Orion's Belt in the constellation
of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a
distance of 1,344 ± 20 light years and is the
closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years
across. It has a mass of about 2000 times the mass of the Sun. Older texts
frequently refer to the Orion Nebula as the Great Nebula in Orion or the
Great Orion Nebula.
The Orion Nebula is one of the most scrutinized and photographed objects in
the night sky, and is among the most intensely studied celestial features. The nebula
has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of
gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and
turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars
in the nebula. There are also supersonic "bullets" of gas piercing the hydrogen
clouds of the Orion Nebula. Each bullet is ten times the diameter of Pluto's orbit and tipped with iron atoms
glowing bright blue. They were probably formed one thousand years ago from an
unknown violent event.
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