0
What else can I help you with?
In its next main stage of stellar evolution the sun is expected to be?
In its next main stage of stellar evolution, the Sun is expected to enter the red giant phase. As it exhausts hydrogen in its core, the core will contract and heat up, causing the outer layers to expand significantly. This expansion will ultimately engulf the inner planets, including Mercury and Venus, and possibly Earth. Eventually, the Sun will shed its outer layers, leaving behind a white dwarf surrounded by a planetary nebula.
What is the correct sequence for stellar evolution?
Stellar evolution states that stars are powered by a hydrogen fusion reaction. When a star has burned up its hydrogen, this reaction runs out, and its core will contract and heat up causing the hydrogen shell to ignite. This causes the star to expand into a giant star. Depending on the solar mass of the star, it will evolve into different objects. If its mass is in the 0.3 to 3 range, its core, now fusing helium will degenerate before the helium has a chance to ignite, and the explosion that results will be absorbed into the star itself. A star with a mass less than 0.4 will evolve into a white dwarf. If its mass is between 0.4 and 0.3, it will become a red giant and then burn out into a white dwarf. Stars that are more massive will collapse explosively as a super nova, and if it is larger than 25 stellar masses, it will be a neutron star.
How would you arrange this in order red giant white dwarf and main sequence and why?
The order of stellar evolution is typically: main sequence, red giant, and then white dwarf. Stars spend the majority of their life on the main sequence, where they fuse hydrogen into helium. As they exhaust their hydrogen, they expand into red giants. After shedding their outer layers, the remaining core becomes a white dwarf, which is the final stage of a low to medium mass star.
Point in stellar evolution when a star has used up all its fuel?
When a star has used up all the hydrogen in its core, it has reached the end of the main sequence. Subsequent developments depend on the mass and composition of the star. Sun-type stars may expand and continue to fuse ever heavier elements in and about their core, until fusion no longer yields sufficient energy to prevent collapse.
What characterizes a star leaving the Main-Sequence?
A star leaving the Main Sequence indicates that it has exhausted the hydrogen fuel in its core. As a result, the core contracts and heats up, causing the outer layers to expand and cool, leading to the star becoming a red giant. This phase marks the transition to the later stages of stellar evolution.
Stars spend most of their life span as giants?
Stars spend most of their life span in the main sequence phase, where they are fusing hydrogen into helium in their cores. After exhausting their hydrogen fuel, they will expand and cool down to become red giants before eventually evolving into white dwarfs or other stellar remnants.
Why does a star's hydrogen supply run out?
A star's hydrogen supply runs out because of nuclear fusion in its core. As hydrogen is fused into heavier elements like helium, the star's core temperature increases, causing it to expand and cool. Eventually, the core runs out of hydrogen to fuse, leading to the star's evolution into a different phase.
What is the next stage in the suns evolution?
The next stage in the Sun's evolution is the red giant phase. This occurs when the Sun runs out of hydrogen fuel in its core and starts burning helium. During this phase, the Sun will expand and become larger, eventually engulfing Mercury, Venus, and possibly Earth.
What is the evolutionary end of the sun?
Based on current theories of stellar evolution, billions of years in the future our Sun will expand to a red giant, shed much of its outer envelope, and become a white dwarf. After this it will probably cool over an extremely long time and likely end up as a black dwarf.
Why does water expand instead of increaing?
due to hydrogen bond
What type of bonds cause water to expand when it freezes?
Hydrogen bonds cause water to expand when it freezes. As water cools and freezes, the hydrogen bonds between water molecules form a crystalline structure with a more open arrangement than in its liquid state, causing it to expand and become less dense.
Do stars expand in size?
Stars expand in size to become red giants, when they start running low on Hydrogen fuel.
