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The Life Cycle of a Star

Brandon Yeh

Created on April 20, 2021

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Transcript

The Life Cycle of a Star

By: Brandon Yeh

Nebula/Prostar

High Mass Main Sequence Star

Supernova

Black Hole

Supergiant

Low Mass Main Sequence Star

Neutron Star

White Dwarf

Black Dwarf

Red Giant/ Giant

Nebula/Prostar

A nebula is a massive cloud of dust and gas occupying space between stars. A nebula almost acts as a nursery for new stars.

High Mass Main Sequence Stars

Low Mass Main Sequence Stars

Low mass main sequence stars are the smallest, coolest and dimmest. Since they are so small, they use less hydrogen, and live longer lives.

High mass main sequence stars have shorter life spans than low main sequence stars. However, they have higher temperatures, higher luminosity, and are larger.

Red Giants/Giants

A Red Giants is a star that has a high luminosity, meaning that they are also large. They have lower surface temperatures though, which given them their red color.

Supergiants

Supergiants are much larger and brighter than a giant. This comes with a shorter life span. The temperature of a can vary going from about 2,000K to about 15,000K.

Supernova

A supernova is an explosion from a star. It's a star's last hurrah and is caused by a star reaching the end of it's life or absorbing too much matter.

White Dwarf

White Dwarfs are smaller than most stars. They have a very low luminosity. But they almost trade this off, because their surface temperature is extremely high.

Black Dwarf

A Black Dwarf is a reminent of a White Dwarf that has cooled Down. Black Dwarfs don't emit any light and contain very little heat.

Neutron Star

Black Hole

A neutron star is a collapsed Supergiant. Neutron Stars are very small, but are very dense. When the Supergiant collapses, it crushes the protons and electrons together, leaving neutrons.

A black hole is a place in space that where gravity is very strong. The gravity near a black hole is so strong that even graavity can't get out of it.

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