How does a constellation form?

Answer 1

well after a red giant "explodes" he projects very many particles and gasez and most of them create a mini-group of particles and the gasez which make them glow and after time they start to move away>>

Answer 2

A "constellation" is one of two things:

1. An asterism, or group of stars considered together for easier recognition;

2. One of 88 divisions of the sky (most of which contain some asterisms) for the purpose of locating stars and other objects.

Of the former group, different peoples have named certain asterisms and made up stories about them as aids to memory. Many of the ones that science eventually standardized come from the stories of the Ancient Greeks.

It's worth knowing that the constellations/asterisms are NOT REALLY THERE in the sense that the stars that make them up are more than coincidentally in the (apparently) same place.

Suppose you could only look out of one window (as we, confined to the Earth and the Solar System, have only one "window" on the Universe). Through it, you might see a clothes pole, a church steeple and a distant mountain all within a finger's width of each other, but these things wouldn't be in those positions to someone looking at them from another house.

The three stars in Orion's Belt, for example, are almost as far from each other as they are from us.

Answer 3

they are formed from a snails shell and its guts

Answer 4

Constellations are just depictions of things that humans see. They don't necessarily "form" per say.

Answer 5

There really isn't much to "form"; a constellation is basically just a direction in space!

They form in the minds of humans.