Protostar

A protostar is an early stage in the star formation process, where gas and dust collapse under gravity, beginning the transformation into a new star. Read more about Protostar, Meaning, Formation, Examples, Stages, Latest News

Protostar
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Protostar Latest News

A team of researchers at the IIST, Thiruvananthapuram, recently discovered radio emission with a special property known as circular polarisation near a massive young protostar that is still forming about 4,500 light-years from Earth.

About Protostar

  • A protostar is an early stage in the star formation process
  • It is a large mass of gas and dust formed as a result of the contraction of a giant molecular cloud in the interstellar medium. 
  • As the cloud collapses, gravitational energy is converted into heat, warming the still-forming protostar. 
  • It may last from 100,000 to 10 million years, depending on the mass of the star.
  • It begins with an increase in density in the molecular cloud core and ends with the formation of a pre-main-sequence star
  • Pre-main-sequence stars of similar mass to the Sun are known as T-Tauri stars. 
  • Once hydrogen fusion ignites in the core of a star, it begins producing energy and becomes a main sequence star.
  • Protostars are usually surrounded by dust, which blocks the light that they emit, so they are difficult to observe in the visible spectrum.

Source: TH

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Protostar FAQs

Q1. What is a protostar?+

Q2. How is a protostar formed?+

Q3. What is the primary source of heat in a protostar?+

Q4. The protostar stage lasts for how long?+

Tags: prelims pointers protostar upsc current affairs upsc prelims current affairs

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