How did our Sun form?

1. Origins of a star Our Sun and its planets were born when a hydrogenrich cloud of interstellar gas and dust began to slowly collapse around 5 billion years ago. 2. Flattening out As the cloud grew denser, it span faster. Collisions within the cloud tended to even out its rotation, resulting in a flattened disc with a large central bulge. 3. Condensing Sun As the central region of the ‘protostellar nebula’ grew more massive, its gravity began to pull in more material, gradually condensing and heating up. 4. Protostar At first, the Sun shone by radiating energy generated by its own gravitational contraction. It was a large, warm ball of gas surrounded by a ring of debris. 5. Ignition! The Sun continued to grow smaller and denser, until its…

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All About Space Book of the Solar System (Digital) - 1 Issue, All About Space Book Of The Solar System 4th Edition

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