A red giant is a star in its old age. During this stage, a star expands and cools as it exhausts its hydrogen fuel. Eventually, it will shed its outer layers, forming a planetary nebula.
None of those is a main sequence star.
For most of a star's life, the main fuel is protium (hydrogen-1), which is fused into helium-4.
An expanding star after exhausting its hydrogen fuel is called a red giant. This stage occurs when the core contracts and heats up, causing the outer layers of the star to expand and cool, giving it a red color.
A bright giant is a class of star that don't quite make it into the supergiant class but are much more luminous than giants.Eg. Epsilon Canis Majoris (Adhara): a blue-white (B-type) bright giant
Main sequence star: hydrogen-1. Red giants: helium-4.
The main fuel for red giant stars is helium. In the core of red giant stars, hydrogen fusion has ceased, and as the star evolves, it starts fusing helium into heavier elements like carbon and oxygen. This process produces the energy that sustains the star's outer layers and causes it to expand and cool, creating a red giant.
red giant
The next step in its life is to become a "red giant" star.
The next step in its life is to become a "red giant" star.
I am pretty sure it becomes a giant if I'm not mistaken.
Yes, it is an orange giant star. It is an old star which has ran out of hydrogen fuel and has moved off the main sequence, having expanded to around 44 times the diameter of our own sun.
The next step in its life is to become a "red giant" star.
Main sequence star: hydrogen-1. Red giants: helium-4.
Main sequence star: hydrogen-1. Red giants: helium-4.
A star evolves off the main sequence when it runs out of hydrogen fuel in its core. This causes the core to contract and heat up, leading to the expansion of the star's outer layers. This marks the beginning of the star's evolution into a red giant or supergiant, depending on its mass.
A red giant is a star in its old age. During this stage, a star expands and cools as it exhausts its hydrogen fuel. Eventually, it will shed its outer layers, forming a planetary nebula.