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Exhausting its hydrogen supply. Main Sequence stars fuse hydrogen to make helium. Eventually, they run out of fuel and then start to fuse helium to make carbon, nitrogen and oxygen, with slightly higher atomic numbers than helium,
The nucleo-chemistry of these reactions involves the generation of more energy and greater loss of mass than hydrogen fusion did which is why after 100 million years or so stars then leave the red giant phase and cool. shrink and turn into white dwarfs.
A red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars.
THE SUN
The Sun is expected to become a red giant in about five billion years. It is calculated that the Sun will become sufficiently large to engulf the current orbits of some of the solar system's inner planets, including Earth.
However, the gravitational pull of the Sun will have weakened by then due to its loss of mass, and all planets but Mercury will escape to a wider orbit. That said, Earth's biosphere will be destroyed as the Sun gets brighter while its hydrogen supply becomes depleted.
The extra solar energy will cause the oceans to evaporate to space, causing Earth's atmosphere to become temporarily similar to that of Venus, before the atmosphere is also lost.
A star becomes a giant when it exhausts the hydrogen fuel in its core and starts fusing helium. This causes the core to contract and the outer layers to expand, making the star larger and cooler. The increase in size and decrease in temperature classify it as a giant star.
Exhausting its hydrogen supply. Main Sequence stars fuse hydrogen to make helium. Eventually, they run out of fuel and then start to fuse helium to make carbon, nitrogen and oxygen, with slightly higher atomic numbers than helium,
The nucleo-chemistry of these reactions involves the generation of more energy and greater loss of mass than hydrogen fusion did which is why after 100 million years or so stars then leave the red giant phase and cool. shrink and turn into white dwarfs.
A red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars.
THE SUN
The Sun is expected to become a red giant in about five billion years. It is calculated that the Sun will become sufficiently large to engulf the current orbits of some of the solar system's inner planets, including Earth.
However, the gravitational pull of the Sun will have weakened by then due to its loss of mass, and all planets but Mercury will escape to a wider orbit. That said, Earth's biosphere will be destroyed as the Sun gets brighter while its hydrogen supply becomes depleted.
The extra solar energy will cause the oceans to evaporate to space, causing Earth's atmosphere to become temporarily similar to that of Venus, before the atmosphere is also lost.
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Why does an expanding giant star become more luminous?
As a giant star expands, its surface area increases, allowing more energy to escape from its core. This increased surface area results in the star appearing more luminous. Additionally, the expansion causes the outer layers of the star to become less dense, which allows more light to escape and contribute to its overall brightness.
When a main-sequence star has exhausted the fuel in its core it becomes a....?
I am pretty sure it becomes a giant if I'm not mistaken.
What do medium stars in the red giant phase become?
A star that is in it's teenage years(medium star) isn't a red giant until it's last years.
Which is denser a dwarf star or a giant star?
A dwarf star is denser than a giant star. Dwarf stars have a higher density due to their smaller size and higher mass compared to giant stars. Giant stars have larger volumes and lower densities as they have expanded and become less dense towards the end of their life cycle.
How do you use red giant in a sentence?
The red giant star is located in the constellation Orion. Scientists are studying the red giant to understand more about the end stages of a star's life cycle.
What causes a star to become a super giant versus a giant?
That would mainly depend on the star's mass.
What causes a giant star to turn into a white dwarf?
A giant star would experience a supernova explosion, in order to become a white dwarf.
What causes a giant?
After a star burns up all it's hydrogen, it becomes a red giant.
How does a main sequence star becomes a giant?
it doesn't because the star may be already dead before its ready to become a giant.
Why does an expanding giant star become more luminous?
As a giant star expands, its surface area increases, allowing more energy to escape from its core. This increased surface area results in the star appearing more luminous. Additionally, the expansion causes the outer layers of the star to become less dense, which allows more light to escape and contribute to its overall brightness.
What determines if a star will become a rea giant or a super giant?
A star's entire fate is tied into its initial mass. Nothing else matters.
What will a star become as it uses up its hydrogen supply?
a super giant.
How many times can a star become a red giant?
Just once.
What kind of star the sun will become in the end of the cycle?
red giant
When a main-sequence star has exhausted the fuel in its core it becomes a....?
I am pretty sure it becomes a giant if I'm not mistaken.
The sun is a .medium -sized star but one day it will become a red giant?
yes. in about five billion years the sun will become a red giant.
What is the name of the star that follows the sun?
The Sun will still be "the Sun", but the next type of star it will become is a "red giant" star.
