How dense is the Orion Nebula? Detailed answer

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How dense is the Orion Nebula? Detailed answer

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How dense is the Orion Nebula?

The Orion Nebula is located at a distance of approximately 1500-1600 light years from Earth.

This is the brightest diffuse (gas) luminous nebula in the sky. Its visible surface extends approximately 80 x 60 arc minutes, which is more than 4 times the area of the disk of the full moon. The linear size of this formation in diameter is about 30 light years.

The average density of the Orion Nebula is 100 quadrillion (quadrillion - the number represented by a unit with 15 zeros) times less than the density of room air - a part of the nebula with a volume of 100 cubic kilometers has a mass of one milligram.

The best vacuum ever achieved in laboratories is millions of times denser than the Orion Nebula. And yet the mass of this gigantic formation is enormous: from the substance of the Orion Nebula one could "make" about a thousand such suns as ours, or over 300 million Earth-like planets.

Another clear example: if the Earth is reduced to the size of a pinhead, then on this scale the Orion Nebula will take up a volume the size of our planet.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

Where did the word umbrella come from?

The word "umbrella" appeared in Russian from Dutch in this form. Later it was perceived by the people as a diminutive, and for large umbrellas they began to use the word "umbrella".

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