How can you relate the life stages of a star to the life stages of a human?
How does the life cycle of humans compare to the life cycle of a star? They both have stages where they are born and die which is in the main sequence and supernova and in a human they are born in a womb and die of old age.
How stars are born and died?
Stars are born when large gas clouds collapse under gravity. When it eventually dies, it will expand to a form known as a ‘red giant’ and then all the outer layers of the Sun will gradually blow out into space leaving only a small White Dwarf star behind about the size of the Earth.
What are the 3 possible outcomes in the life of a star?
stars spend most of their lives on the main sequence fusing hydrogen gas to helium gas. stars eventually swell up to form a red giant star. stars like the Sun end their lives as planetary nebulae and white dwarfs.
What is the evolution of a star from birth to death?
Some time after puffing off its outer layers, the central star will run out of fuel. When this happens the central star begins to die. Gravity causes the star to collapse inwards and the star becomes incredibly dense and compact, about the size of the Earth. The star has then become a white dwarf star.
What happens during the death of a star?
Most stars take millions of years to die. After puffing off its outer layers, the star collapses to form a very dense white dwarf. One teaspoon of material from a white dwarf would weigh up to 100 tonnes. Over billions of years, the white dwarf cools and becomes invisible.
What factors affect a stars life cycle?
A star’s life cycle is determined by its mass. The larger its mass, the shorter its life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born.
Are stars Reborn?
Such “resurrected” stars are rare—only three have been glimpsed in the entire Milky Way, and they’re hard to spot: This rebirth phenomenon only happens for a very short time at the end of the star’s life.
What happens when a star is born?
Stars are born within the clouds of dust and scattered throughout most galaxies. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. As the cloud collapses, the material at the center begins to heat up.
How is a star created or born?
A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. And once the fusion reactions begin, they exert an outward pressure. As long as the inward force of gravity and the outward force generated by the fusion reactions are equal, the star remains stable.
What is a birth of a star called?
The first stage in the birth of a star is called a protostar. Over the next 100 million years, gravity continues to collapse the T Tauri star until the temperature at its core reaches the point that nuclear fusion can begin.
What causes the death of a star?
All stars eventually run out of their hydrogen gas fuel and die. The way a star dies depends on how much matter it contains—its mass. As the hydrogen runs out, a star with a similar mass to our sun will expand and become a red giant. The death of massive stars can trigger the birth of other stars.