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They start as stellar nebulae - a cloud of molecular gases and dust. This collapsed, either under the force of its own gravity or helped by an external force such as a passing star or shock waves from a supernova explosion. The dust and gas began to collect into denser regions and as the denser regions pulled in more and more matter, conservation of momentum caused it to begin rotating, while increasing pressure caused it to heat up. Most of the material ended up in a ball at the centre which would become the star. The rest of the matter flattened out into disk that circled around it and could form planets.
After a time (100,000 years for our sun), the temperature and pressure at the core was high enough for thermonuclear fusion to begin. That is, hydrogen began to fuse into helium.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoThey begin their life cycle as a protostar.
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Water cycles are for all life?
fill in the blank question
Why are life cycles important to living things?
if they do not have a life cycle they all die in the mean time
Are alternation of generations haploid and diploid all types of sexual life cycles?
True ...
All-stars begin their lives as a part of what?
nebula's
When the stars begin to huddle the earth soon to become a puddle?
Yes, we get in a muddle and all have a cuddle.
Where do all-stars begin there life?
Stars begin their lives as clouds of gas and space dust.
Nearly 90 percent of all-stars are at what point in their life cycles?
90% of all stars are at mid-life where their cores are fusing hydrogen into helium.
Where do all-stars begin their life cycle?
In the nebula!
Do all-stars have the same sunspot cycles?
Not necessarily
what is the name of all the cycles in science?
Life! :)
All-stars begin as a?
As a ball of fire
How do all-stars begin their lives as parts of?
nebulas =-)
How do all stars begin their lives part of?
nebulas =-)
Does biogeochemical cycles sustain all life on earth?
Yes.
Water cycles are for all life?
fill in the blank question
How might the death of all the producers in an ecosystem affect the carbon oxygen and nitrogen cycles?
All life will completely stop as well as the cycles that these used.
Why are life cycles important to living things?
if they do not have a life cycle they all die in the mean time
