When the pressure and temperature of a nebula increase, it can lead to the formation of protostars. As gravity causes the nebula to contract and heat up, eventually nuclear fusion can begin at the core of the protostar, leading to the formation of a new star.
Gravity.
Nebulae begin to contract primarily due to gravitational forces. A disturbance, such as shock waves from nearby supernovae or collisions with other gas clouds, can trigger this contraction. As the gas and dust within the nebula clump together, gravitational attraction increases, leading to further collapse and the eventual formation of stars and planetary systems. Additionally, the cooling of the gas can enhance the process by allowing particles to come closer together.
The force of gravity caused the solar nebula to contract. As the nebula collapsed under its own gravity, it began to spin and flatten into a disk shape, eventually forming the Sun and the planets. Additionally, the heat and pressure generated by the gravitational contraction contributed to the collapse of the nebula.
Gravity.
When the pressure and temperature of a nebula increase, it can lead to the formation of protostars. As gravity causes the nebula to contract and heat up, eventually nuclear fusion can begin at the core of the protostar, leading to the formation of a new star.
Gravity.
An explosion from outside the nebula
Nebulae begin to contract primarily due to gravitational forces. A disturbance, such as shock waves from nearby supernovae or collisions with other gas clouds, can trigger this contraction. As the gas and dust within the nebula clump together, gravitational attraction increases, leading to further collapse and the eventual formation of stars and planetary systems. Additionally, the cooling of the gas can enhance the process by allowing particles to come closer together.
The force of gravity caused the solar nebula to contract. As the nebula collapsed under its own gravity, it began to spin and flatten into a disk shape, eventually forming the Sun and the planets. Additionally, the heat and pressure generated by the gravitational contraction contributed to the collapse of the nebula.
In the nebula!
Gravity.
A supernova occurs.
Prepositional phrases that begin with after are adverb phrases: e.g. "The nebula formed after a supernova" meaning the nebula formed afterward.
Prepositional phrases that begin with after are adverb phrases: e.g. "The nebula formed after a supernova" meaning the nebula formed afterward.
A stellar nebula.
No one has such a contract to begin with,