Stars start out as huge blobs of gas in space - but how big and heavy does a blob of gas have to be before it becomes a star? It sounds like a simple question, but astronomers have debated the answer for decades.
What Makes A Star A Star?
Stars start out as huge blobs of gas in space - but how big and heavy does a blob of gas have to be before it becomes a star? It sounds like a simple question, but astronomers have debated the answer for decades.
Published: 3 July 2026
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