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When hydrogen in the core of the star is depleted, a balance no longer exists between pressure and gravity, with that the core contracts and temperature rises. This cause outer layers to cool and expand. In this late stage of the star's life cycle, it is called a giant. The sun will continue to be a main sequence for about 5 billion years, then the sun will become a giant.
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Name an example of a main sequence?
The sun is a main sequence star
Why is Sirius not a main sequence star?
Sirius is not a single star but a binary star system consisting of a white main sequence star and a white dwarf.
What does it mean when a star goes off the main sequence?
When a star "goes off the main-sequence" it generally means the star has run out of hydrogen fuel and is beginning the post-main-sequence or its end of life phase. The main sequence of a star is the time where it is no longer just a proto-star but is burning hydrogen as a primary source of fuel.
Is a white dwarf considered a main sequence star?
No, a white dwarf is not considered a main sequence star. A main sequence star is a star that is still fusing hydrogen in its core. A white dwarf is the remnant of a low to medium mass star in which fusion has stopped.
How long will Spica stay on the main sequence?
Spica is a dual star system, with the two members too close for resolution by the best telescopes. The larger, primary star is a blue-white giant, and does have the potential to end it's life as a supernova. The primary is not a main sequence star. The secondary, about 70% the size of the primary, is a main sequence star, also blue white.
Is Proxima Centauri a main-sequence star?
Yes, Proxima Centauri is a main-sequence star and will remain so for about another four trillion years.
Is a red giant star considered to be a main sequence star?
No. Red giants are not on the main sequence.
How long does an average star spend as a hydrogen- burning main sequence star?
Ten billion years
Does a red main sequence star have fusion?
A red main sequence star would be a red dwarf or a branch red giant. To be on the main sequence, you have to have hydrogen nuclear fusion.
Main sequence star distance from earth?
The sun is a main sequence star, so 1 AU.
Name an example of a main sequence?
The sun is a main sequence star
What is a stabilized star?
Main-Sequence star
Why is Sirius not a main sequence star?
Sirius is not a single star but a binary star system consisting of a white main sequence star and a white dwarf.
What category does a star belong in Main sequence star white dwarf red giant neutron star?
None of those is a main sequence star.
What is the main characteristic of a sequence star?
The defining characteristic of a main sequence star burns hydrogen to helium in its core.
What is the nearest star in the main sequence is?
Most stars are on the main sequence; that includes red dwarves. Specifically, in this case, the closest known star - Proxima Centauri - is also the closest main-sequence star.
The star Algol is estimated to have approximately the same luminosity as the star Aldebaran and approximately the same surface temperature as the star Rigel Algol is best classified as a?
Algol is a blue main-sequence star in the constellation Perseus
