Magellanic Clouds .
They form themselves.
The nebular hypothesis
Clouds of dust and gas in space are called nebulae, singular nebula. Using "nebulas" as the plural isn't exactly wrong as such, but nebulae is more traditional and makes people think you know Latin.
The earth and the sun formed from the same huge cloud of interstellar gas and dust, but the sun grabbed most of everything, and had the strong gravity to hold in hydrogen and helium. The earth condensed separately in the huge disc that became our solar system, forming a rocky planet with an iron core. When the sun turned on, the solar radiation cleaned up the inner solar system and pushed out the gas and dust that remained. So - the earth and the sun formed at the same time from the same dust cloud, but have very different compositions. And the earth was never physically a part of the sun.
That is called an accretion disk or a proto-Solar system.
Nebula
They form themselves.
It is known by several terms: Cumulonimbus, Thunderhead, Anvil cloud.
nebula
The nebular hypothesis
Clouds of dust and gas in space are called nebulae, singular nebula. Using "nebulas" as the plural isn't exactly wrong as such, but nebulae is more traditional and makes people think you know Latin.
Astronomers Believe That The Solar System Began As A Huge Cloud Of Dust And A Gas Called ''NEBULA''
Scientists believe that the solar system was formed when a cloud of gas and dust in space was disturbed, maybe by the explosion of a nearby star (called a supernova). This explosion made waves in space which squeezed the cloud of gas and dust. Squeezing made the cloud start to collapse, as gravity pulled the gas and dust together, forming a solar nebula. Just like a dancer that spins faster as she pulls in her arms, the cloud began to spin as it collapsed. Eventually, the cloud grew hotter and denser in the center, with a disk of gas and dust surrounding it that was hot in the center but cool at the edges. As the disk got thinner and thinner, particles began to stick together and form clumps. Some clumps got bigger, as particles and small clumps stuck to them, eventually forming planets or moons . Near the center of the cloud, where planets like Earth formed, only rocky material could stand the great heat. Icy matter settled in the outer regions of the disk along with rocky material, where the giant planets like Jupiter formed. As the cloud continued to fall in, the center eventually got so hot that it became a star, the Sun, and blew most of the gas and dust of the new solar system with a strong stellar wind. By studyingmeteorites, which are thought to be left over from this early phase of the solar system, scientists have found that the solar system is about 4600 million years old!
I nebula is a huge dust cloud in space that forms new stars. Some nebulas are so big that a tiny finger tip would be bigger than our solar system. I will edit this everyday. This is a warning. ANSWERS.COM WILL CRASH YOUR COMPUTER SO BAD. MY OTHER ONE DIED BECAUSE OF THIS
"Nebula is a medicinal liquid preparation intended for use in an atomizer"and "Nebulae's are huge, diffuse clouds of gas and dust in intergalactic space"
A discharge of static electricity from a huge cloud is called lightning.
The sun has already gone through the stage of protostar. It was the condensing stage from a huge cloud of gas and dust, heating up and making some light.