What causes galaxies stars and solar systems to form?

The process of star formation takes around a million years from the time the initial gas cloud starts to collapse until the star is created and shines like the Sun. Stars form when regions of dust and gas in the galaxy collapse due to gravity. Without this dust and gas, stars would not form.

Are there multiple galaxies in the universe?

While NASA previously determined that there were around two trillion galaxies in the universe, new findings say the number is more likely hundreds of billions. While NASA previously determined that there were around two trillion galaxies in the universe, new findings say the number is more likely hundreds of billions.

Who created galaxy?

Astronomers aren’t certain exactly how galaxies formed. After the Big Bang, space was made up almost entirely of hydrogen and helium. Some astronomers think that gravity pulled dust and gas together to form individual stars, and those stars drew closer together into collections that ultimately became galaxies.

Why are galaxies flat?

Summary. As galaxies form, the collisions of objects with each other cancel their momentum in all directions except for the direction of the rotation. The stars line up around the center of rotation, creating the flat, or pancake-like shape.

Why do stars form in galaxies?

Star Formation Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.

Why is the solar system flat?

Eventually, a portion of this material collapses toward the center, forming a star, and the spinning cloud begins to flatten into a disk due to the rotation. It’s out of this rotating protoplanetary disk of gas and dust that planets are born, resulting in a relatively flat solar system.