The celestial bodies are all the objects that are part of the universe , which can interact with another body by the law of gravity , (orbiting it or being orbited), or if there are no forces that influence it, it remains as a wandering body in middle of space.
Summary
[ hide ]
- 1 Classification
- 2 The Stars
- 1 Classification by size
- 2 Other types of stars
- 3 The Constellations
- 4 The Nebulae
- 5 The Quasars or Quasars
- 6 Source
Classification
The celestial bodies are classified according to their ability to emit light or reflect it, they are all part of a galaxy . Astros bright like stars , including the sun emit light produced by the internal reactions that occur in it. The Astros opaque not have their own light rather reflect the bright stars. These stars are the planets and satellites.
The stars
They are stars that were formed by the condensation of hydrogen and cosmic dust. These stars are endowed with their own light, they are the largest stars in the universe. The stars shine according to the nuclear transmutations that they undergo in their nucleus.
Classification by size
- Dwarfs
- Medium
- Giants
- Super giants
Other types of stars
- Novas , are those stars that increase their brightness due to the explosions they experience (thermonuclear).
- Super Novas , Slender that explode and disintegrate form nebulae and neutron stars.
- Pulsar is a neutron star, the residue of a supernova.
- Black hole , regions of space in which one or more stars have collapsed and where gravitational forces become so intense that they prevent even particles moving at the speed of light (300,000 km / s) from escaping, for this reason cannot escape any kind of light, matter or signal.
The constellations
They are groups of stars visible to the naked eye, their names correspond to figures or people, which is obtained by mentally joining them. It comprises 89 isolated sectors of the celestial sphere, and they have the following classification:
- Boreal constellations
- Zodiacal constellations
- Southern constellations
The Nebulae
They are gaseous luminous spots composed of hydrogen and helium, as well as cosmic dust, which originate stars and planets. Nebulae can be: Bright nebulae, when they are visible among them are: Orion, Rosette, Trifid; likewise, there are dark nebulae, such as the Horse Head, Sack of Coal.
The Quasars or Quasars
They are structures very similar to stars, called “quasi stars” or quasars. All quasars have been reported to move away from the galaxy at a speed of 200,000 km / s, comparable to the speed of light. They are the brightest objects in the universe.