What causes the birth of a star?

Question

Clara Avalos · Accepted Answer

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, revealed in vivid detail in the adjacent image, which combines images at visible and infrared wavelengths measured by NASA's Hubble Space Telescope and Spitzer Space Telescope.
Stars are born inside dust clouds and are dispersed throughout most galaxies. One well-known example of a dust cloud is the Orion Nebula, which can be seen in striking detail in the image next to it. This image combines visible and infrared wavelength images taken by NASA's Spitzer Space Telescope and Hubble Space Telescope. Deep within these clouds, turbulence produces knots of enough mass for the gas and dust to start collapsing due to their own gravitational pull. The material at the center of the collapsing cloud starts to heat up as it collapses; this hot core, also referred to as a protostar, is what will eventually turn the cloud into a star. According to three-dimensional computer models of star formation, the collapsing gas and dust in the spinning clouds could split into two or three blobs, which would account for the majority of stars in the Milky Way being paired or in groups of multiple stars. A dense, hot core forms as the cloud collapses, and it starts to gather gas and dust. Not all of this material ends up inside a star; some of the dust can become planets, asteroids, or comets, or it can just stay as dust.

Luca de · Answer

undefined Gravitational forces cause clouds of gas and dust, mostly hydrogen and helium, to collapse, forming stars.