In November, NASA traditionally celebrates #NebulaNovember - the month of November is dedicated to nebulae. This year there was a game
In general, almost all known nebulae haveat least two names - one official, the other simpler, it is often chosen based on external similarity. For example, the Horsehead Nebula is officially called IC 434, but it does look like a horse's head. It is approximately 3.5 light years across and lies south of the star Alnitak (Zeta Orion), the eastern star in Orion's Belt.
The game Name That Nebula is exactly this - the participant must guess what the scientists reminded of the nebula when they called it. There are three levels of difficulty.
The game is available here.
Nebulae are the real favorites of the public,some of the most famous space attractions. This is a section of the interstellar medium that stands out for its radiation or absorption of radiation against the general background of the sky.
Previously, astronomers called so any celestialobjects that are stationary relative to the stars, having, in contrast to them, a diffuse, blurred appearance, like a small cloud (used in astronomy for a "nebula", the Latin term nebula means "cloud"). Over time, it turned out that some of them, for example, the Orion nebula, are composed of interstellar gas and dust and belong to our Galaxy. Others, "white" nebulae, like in Andromeda and in the Triangle, turned out to be giant star systems. To date, there are 1,500 planetary nebulae known in our Galaxy of 200 billion stars.
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