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]

Oct 30, 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 process of nuclear …

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.

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 100,000 years or …

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 above the star …

May 2, 2025 · At first, most of the protostar’s energy comes from heat released by its initial collapse. After millions of years, immense pressures and temperatures in the star’s core squeeze the nuclei of …

You can think of a protostar as an immature star, starting its stellar (pertaining to stars) evolution. The development of a star begins with the nebula, a swirling cloud of interstellar (in between starts) gas …

Nov 16, 2025 · A Protostar is the first stage of a star’s life after an event of some form has caused a nebula of dust and cloud to collapse. It has not yet built enough mass to fuse hydrogen to helium.

How NASA’s Roman Mission Will Unveil Our Home Galaxy Using Cosmic Dust Article 3 Min Read Webb Telescope: A prominent protostar in Perseus Multimedia Go To Galleries

Protostar is an early stage in the evolution of a star that usually grows to the point of beginning nuclear fusion and becoming a star by gathering mass. [1] It is made of a contracting cloud of cold and dark …