Table of Contents
What are the stages in a stars life cycle?
Step 1 – Green – A cloud of gas and dust collapses due to gravity, creating a protostar. Step 2 – Blue – Gravitational energy powers the young star until… Step 3 – Yellow – … nuclear fusion occurs.
What determines when a star becomes a main sequence?
Stars start their lives as clouds of dust and gas. Gravity draws these clouds together. But if the body has sufficient mass, the collapsing gas and dust burns hotter, eventually reaching temperatures sufficient to fuse hydrogen into helium. The star turns on and becomes a main sequence star, powered by hydrogen fusion.
What is the stellar life cycle?
Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe.
What are the four stages in the life cycle of an average star?
Gas cloud.,Proto star,. Main sequence.. red giant, planetary nebula. white dwarf.
What happens when a main sequence star exhausts?
What happens when a main-sequence star exhausts its core hydrogen fuel supply? The core shrinks while the rest of the star expands.
What are the stages of the life cycle of a star?
Just like living things and humans, stars have a life cycle, which consists of birth, growth, development, middle age, old age, and death. The life cycle of a star spans over billions of years. Section One – Sequencing. The stages below are not in the right order.
How does a star start its life cycle?
A star’s life begins with the gravitational collapse of a gaseous nebula of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements.
What are the stages in stars complete life cycle?
Life Cycle of a Star – Step by Step Explained Giant Gas Cloud. The life cycle of a star begins as a large gas cloud. Protostar. It is a baby star that forms when gas particles in the molecular cloud run into each other, and they create heat energy. T-Tauri Phase. Main sequence star. Expansion into Red Giant. The fusion of Heavier Elements. Supernovae and Planetary Nebulae.
Do all stars have the same life cycle?
On the other hand, average stars like sun end their life as white dwarf surrounded by disappearing planetary nebula. However, all stars roughly follow the same basic seven-stage life cycle, starting as a gas cloud and ending as a star remnant.