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Posted on April 23, 2022 (Updated on July 9, 2025)

What is the earliest stage of a star?

Space & Navigation

protostarA protostar is the earliest stage of a star’s life. A star is born when the gas and dust from a nebula become so hot that nuclear fusion starts.

What are the stages of a star?

Seven Main Stages of a Star

  • Giant Gas Cloud. A star originates from a large cloud of gas. …
  • Protostar. When the gas particles in the molecular cloud run into each other, heat energy is produced. …
  • T-Tauri Phase. …
  • Main Sequence. …
  • Red Giant. …
  • The Fusion of Heavier Elements. …
  • Supernovae and Planetary Nebulae.

What are the 4 stages of a star?

The formation and life cycle of stars

  • A nebula. A star forms from massive clouds of dust and gas in space, also known as a nebula. …
  • Protostar. As the mass falls together it gets hot. …
  • Main sequence star. …
  • Red giant star. …
  • White dwarf. …
  • Supernova. …
  • Neutron star or black hole.

What are the 3 stages of a star?

Three end stages of stars are:

  • White Dwarf.
  • Neutrons Star.
  • Black Hole.

What are the 6 stages of a star?

Formation of Stars Like the Sun

  • STAGE 1: AN INTERSTELLAR CLOUD.
  • STAGE 2: A COLLAPSING CLOUD FRAGMENT.
  • STAGE 3: FRAGMENTATION CEASES.
  • STAGE 4: A PROTOSTAR.
  • STAGE 5: PROTOSTELLAR EVOLUTION.
  • STAGE 6: A NEWBORN STAR.
  • STAGE 7: THE MAIN SEQUENCE AT LAST.

What is the order of a star life cycle?

as our sun (just on a larger scale) upto the Main Sequence stage, Then the massive stars expand into a Red Supergiant, Explode into a Supernova, Then turn into a Black Hole or a Neutron Star.

At which of the first five labeled stages is the star in energy balance?

At which of the first five labeled stages is the star in energy balance? The star is in energy balance when its core energy production matches the amount of energy it radiates into space.

What is the next stage in a star’s life after the main sequence phase?

Explanation: After the main sequence stage in which a Star burn it’s Hydrogen into Helium, the Star rearranges it self expanding it’s outer layers and shrinking its core becoming a Red-Giant.

What is the next stage in a star’s life after the main sequence phase quizlet?

After the main sequence, the star moves expands to a red giant. In this stage, the star relies on the second element of the periodic table, helium. after the star has finished with the helium, the star implodes into the white dwarf stage, which relies on carbon. You just studied 18 terms!

What is the earliest stage of a star quizlet?

Terms in this set (11)

  • Nebula. 1st stage. …
  • Protostar. Earliest stage of star’s life. …
  • Main Sequence Star. A star is born when the gas and dust from a nebula become so hot that nuclear fusion starts, creates main sequence star. …
  • Red Giant. …
  • Red Super Giant. …
  • Planetary Nebula. …
  • White Dwarf. …
  • Black Dwarf.

Which stage is the first stage in which the star is stable quizlet?

forming a Pro-star. During its ‘main sequence‘ period of its life cycle, a star is stable because the forces in it are balanced. The outward pressure from the expanding hot gases is balanced by the force of the star’s gravity. Our Sun is at this stable phase in its life.

Which stage is the longest for a star quizlet?

Terms in this set (12)

  • Black Dwarf. …
  • Protostar. …
  • Supernova. …
  • Red Giant. …
  • Neutron Star. …
  • Black Hole. …
  • Stellar Nebula. A cloud of dust and gas from which stars from due to nuclear fusion starting when heat becomes too hot.
  • Main Sequence Star. the longest and most stable stage of a star, not much change during this stage.

Which phase of the star’s life cycle lasts the longest?

Explanation: The Star remains the longest in the stage when it is burning Hydrogen into Helium. For our Sun this is called the main sequence stage which will last for about 4.5 Billion years more , this depends on how fast the star is burning up fuel.

What is the dying stage of a star?

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.

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