The theory of the Big Bang was shaped by Einstein’s
research on relativity and gravity. This also included the expanding and
collapsing of black holes and stars. Using the equations he developed, the Big
Bang Theory was suggested as the source of how the universe was constructed. According
to the Big Bang theory “the solar system was formed from a cloud of space dust
and gas that was 'squeezed' by a supernova explosion.” (“The Formation” np). This
explosion caused the nebula to contract and form into a round sphere. Once the nebula contracted, the Inflation
period began which included an expanding “10-billion degree sea of neutrons,
protons, electrons, anti-electrons (positrons), photons, and neutrinos” (“The
Big Bang” np).
Once the universe began to cool, the Post-Inflation period began. “As it continued to cool, it would eventually reach the temperature where electrons combined with nuclei to form neutral atoms. Before this ‘recombination’ occurred, the Universe would have been opaque because the free electrons would have caused light (photons) to scatter the way sunlight scatters from the water droplets in clouds. But when the free electrons were absorbed to form neutral atoms, the Universe suddenly became transparent. Those same photons - the afterglow of the Big Bang known as cosmic background radiation - can be observed today” (“The Formation” np).
The next stage is called Galaxies. Galaxies “have hundreds of billions of stars, enough gas and dust to make billions more stars, and at least ten times as much dark matter as all the stars and gas put together. And it’s all held together by gravity. So in other words there are millions of stars, lots of dust and dark matter and is put together by gravity”(“ Galaxies”) . There are several galaxies in the Universe like Milky Way, Whirlpool, and Black Eye. Galaxies also have Solar Systems. The Solar System has many planets. There are many objects in Galaxies.
The last and final step of the Big Bang is called Gravity. As mentioned above, Gravity is something that keeps the planets in a certain way, or in other words keeps the planets, and stars orbiting around other planets or stars. Like the Moon orbits the Earth and the earth orbits the sun. They each attract or pull each other; due to this it is called the Gravitational pull. Due to this pull everything remains in its path, and objects do not collide with each other.
Once the universe began to cool, the Post-Inflation period began. “As it continued to cool, it would eventually reach the temperature where electrons combined with nuclei to form neutral atoms. Before this ‘recombination’ occurred, the Universe would have been opaque because the free electrons would have caused light (photons) to scatter the way sunlight scatters from the water droplets in clouds. But when the free electrons were absorbed to form neutral atoms, the Universe suddenly became transparent. Those same photons - the afterglow of the Big Bang known as cosmic background radiation - can be observed today” (“The Formation” np).
The next stage is called Galaxies. Galaxies “have hundreds of billions of stars, enough gas and dust to make billions more stars, and at least ten times as much dark matter as all the stars and gas put together. And it’s all held together by gravity. So in other words there are millions of stars, lots of dust and dark matter and is put together by gravity”(“ Galaxies”) . There are several galaxies in the Universe like Milky Way, Whirlpool, and Black Eye. Galaxies also have Solar Systems. The Solar System has many planets. There are many objects in Galaxies.
The last and final step of the Big Bang is called Gravity. As mentioned above, Gravity is something that keeps the planets in a certain way, or in other words keeps the planets, and stars orbiting around other planets or stars. Like the Moon orbits the Earth and the earth orbits the sun. They each attract or pull each other; due to this it is called the Gravitational pull. Due to this pull everything remains in its path, and objects do not collide with each other.