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How many years do scientists beli eve are left before the sun runs out of hydrogen in its core and leaves the main sequence?
Wiki User
∙ 6y ago
About 5 billion years. However, long before that - somewhere around 500 million to 1 billion years from now - the Sun is expected to become so hot that no life can survive on Earth - unless we do something about it, of course.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoAbout 5 to 7 billion years depending on chosen model
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What makes a star stop being a sequence star?
Basically, the stars on the "Main Sequence" are the ones that fuse hydrogen-1 into helium-4. Once a star burns up its hydrogen-1 fuel, or doesn't have much left, it will start burning helium-4 into heavier elements. It is then that the star leaves the "Main Sequence".
How do a scientists classify a vascular plant with no seeds?
its leaves
What is the most important factor in determining the path a star takes when it leaves the main sequence?
The main factor is its mass.
Does the blue main-sequence star have a longer life than other stars?
It depends on the mass of the star. The lower the mass, the longer it will stay on the main sequence. A red dwarf may stay on the main sequence for trillions of years, while a blue star only lasts a few million years.
How is a star similar to the sun changes after it leaves the main sequence star of it's little cycle?
they are both stars which are big balls of gas
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.
What is the process they generates energy into the core of the main sequence star?
Hydrogen fusion to make helium. When a star runs out of hydrogen in its core to fuse, it begins collapsing, leaves the main sequence, then ignites helium fusion to make carbon, becoming a red giant.
What makes a star stop being a sequence star?
Basically, the stars on the "Main Sequence" are the ones that fuse hydrogen-1 into helium-4. Once a star burns up its hydrogen-1 fuel, or doesn't have much left, it will start burning helium-4 into heavier elements. It is then that the star leaves the "Main Sequence".
The energy source of stars is primarily associated with?
hydrogen fusion in the core. eventually runs out of hydrogen in the core and hydrogen fusion moves to the shell whilst the core contracts (star expands into red giant)...star leaves the main sequence.
Which of the following scientists would more likely be concerned with the rate of photosynthesis in leaves?
what type of scientists is interested in the rate of photosynthesis in leaves
How do a scientists classify a vascular plant with no seeds?
its leaves
Which stage is the sun in?
The Sun is currently on the main sequence, and will stay on it for about another 4.5 billion years. Our sun is currently 4.5 billion years old, which is considered middle age for a star/the sun. The sun has used up half of the available hydrogen, which leaves our sun with about 5 billion years left, before the sun's hydrogen is burnt out, and the sun is no longer our primary source of energy for the earth or any other planet that has life on it.
How and why do scientists know when the first day of fall is?
Leaves falll
The fight sequence with the crazy 88 and o ren at the house of blue leaves is what films cinematography highlight?
The fight sequence with the crazy 88 and o-ren at the house of blue leaves is what film cinematorgraphy highlight?
How many people have drank water before another person?
the Stomach leaves a print on the water, which can't be removed, and scientists can tell how many from that - i don't know how many though . . . . .
What are the intervening sequence of RNA molecules that are cut out before the messenger RNA leaves the nucleus?
Introns are cut out and then the exons are spliced together.
What are the atoms in leaves?
Varies from plant to plant depending on what compounds are in their leaves. Most likely Oxygen, Carbon, Nitrogen, and Hydrogen.
