noun
- celestial objects in the early stages of star formation, consisting of collapsing clouds of gas and dust that have not yet begun nuclear fusion
Usage: astronomy
Examples
- Astronomers discovered several protostars forming in the nearby nebula.
- These protostars will eventually become main sequence stars like our Sun.
- The telescope captured images of protostars embedded in dense molecular clouds.
- It takes millions of years for protostars to develop into fully formed stars.
- Scientists study protostars to understand how stellar systems are born.
- The protostars in this region show signs of active accretion from surrounding material.