It is known by several terms: Cumulonimbus, Thunderhead, Anvil cloud.
I think your question is referring to a nebula. Nebulas look like "huge space clouds", and they are what form stars.
That huge space is generally referred to as space.
nebula
The space around the nucleus of an atom is called the electron cloud. The electron cloud is the space in which the electrons of that atom travel. Compared to the nucleus, the electron cloud is enormous.
they are called electron shells or sometime orbits. there are 32 electron shells. this is also called the electric cloud in the modern atomic model.
Electron Cloud
It is called Negative Space.
Matter
A discharge of static electricity from a huge cloud is called lightning.
Magellanic Clouds .
space cloud
The space around the nucleus of an atom is called the electron cloud. The electron cloud is the space in which the electrons of that atom travel. Compared to the nucleus, the electron cloud is enormous.
An interstellar cloud.
We understand that the electron is the particle that is found in what is called the electron cloud around the nucleus of an atom.
Electron cloud or also called electron orbitals.
The nebular hypothesis
It is called nebula
You think probable to the electron clouds.
cosmic dust
a cloud of glowing gas and dust is called a nebula