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galaxies and stars - Coggle Diagram
galaxies and stars
galaxies
planets
A planet is an astronomical object orbiting a star that is massive enough to be rounded by its own gravity, but not massive enough to cause thermonuclear fusion, and that has cleared its neighboring region of planetesimals.
milky way
The Milky Way is a spiral galaxy where the solar system is located and in turn is the Earth. According to observations, it has a mass of 10¹² solar masses and is a barred spiral. Its mean diameter is estimated to be about 200,000 light years, or 12,648 million astronomical units.
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A galaxy is a collection of stars, gas clouds, planets, cosmic dust, dark matter, and energy gravitationally bound together in a more or less defined structure.
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wormhole
black holes
A black hole is a finite region of space within which there is a concentration of mass high enough to generate a gravitational field such that no material particle, not even light, can escape from it.
In physics, a wormhole, also known as an Einstein-Rosen bridge, is a hypothetical topological feature of a spacetime, described in the equations of general relativity, which essentially consists of a shortcut through space and time.
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nebulae
Nebulae are regions of the interstellar medium made up of gases as well as chemical elements in the form of cosmic dust. They have a remarkable cosmological importance because many of them are the places where stars are born by condensation phenomena
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stars
orion bar
The Orion bar is representative of what scientists believe were the harsh physical conditions of PDRs in the universe billions of years ago.
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orion nebulae
The Orion Nebula, also known as Messier 42, M42, or NGC 1976, is a diffuse nebula located south of Orion's belt. It is one of the brightest nebulae in existence, and can be seen with the naked eye against the night sky.
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In a nearby stellar nursery called the Orion Nebula, young, massive stars emit far ultraviolet light into the cloud of dust and gas from which they were born. This intense flood of radiation is violently disrupting the cloud by breaking molecules apart, ionizing atoms and molecules by removing their electrons, and heating gas and dust.
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