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  1. Protostar - Wikipedia

    A protostar is a very young star that is still gathering mass from its parent molecular cloud. It is the earliest phase in the process of stellar evolution. [1]

  2. Protostar – Definition & Detailed Explanation - Sentinel Mission

    Jul 24, 2025 · What is a Protostar? A protostar is a stage in the formation of a star where a dense cloud of gas and dust begins to collapse under its own gravity. This collapse triggers the …

  3. What is a Protostar? (with pictures) - AllTheScience

    May 21, 2024 · What is a Protostar? A protostar is a young star which is in the early stages of formation, before it reaches the main sequence stage. This stage of star formation can last …

  4. Protostars - NASA

    Discovery Alert: ‘Baby’ Planet Photographed in a Ring around a Star for the First Time!

  5. Protostar - Las Cumbres Observatory

    A protostar looks like a star but its core is not yet hot enough for fusion to take place. The luminosity comes exclusively from the heating of the protostar as it contracts.

  6. Protostars - Harvard University

    Aug 30, 2004 · The image below shows a very young protostar, still deeply embedded in its dust cloud. The star itself is the bright red spot near the base of the dark region. The bright spots …

  7. Glossary term: Protostar

    Description: 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 …

  8. Protostars | Formation, Evolution & Astrophysics Insights

    May 28, 2024 · Explore the fascinating journey of star formation from the birth of protostars in dense molecular clouds to their evolution into main-sequence stars in our detailed guide.

  9. 40 Facts About Protostar

    Feb 22, 2025 · What is a protostar? A protostar is the earliest stage in the formation of a star. Imagine a giant cloud of gas and dust in space. Over time, gravity pulls this material together, …

  10. What is a Protostar? | Evolutionary Stages

    What is a Protostar? A protostar is the earliest stage of a star's life cycle. It forms from a collapsing cloud of gas and dust within a molecular cloud. As the material contracts under …