https://youtu.be/-DJnnyGSk2o
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To planetary formation
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[The most widely accepted theory of planetary formation, known as the nebular hypothesis, maintains that 4.6 billion years ago, the Solar System formed from the gravitational collapse of a giant molecular cloud which was light years across. Several stars, including the Sun, formed within the collapsing cloud.](https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=2ahUKEwjq18z-rfbfAhUJP6wKHa1BCAsQFjABegQIBBAE&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FHistory_of_Solar_System_formation_and_evolution_hypotheses&usg=AOvVaw3lqSqhn62x6NM4dzPJd9kl)

 The of 'Acretion'.  hypothesis assumes that objects  with a differential speed of thousands of miles per hour [collided with each other](https://sen.com/news/bug-eyed-telescopes-could-search-for-threatening-near-earth-objects) and stick.

<center>   ![](https://cdn.steemitimages.com/DQmd1txVtxpqsyx3PMeS4SPYJMgXhSaHoEeyV7Fdp1Feoxi/image.png)At the same time they assume that OTHER objects with a differential speed of thousands of miles per hour collided with each other and exploded.

Or...as demonstrated on earth.

https://youtu.be/ZDhfId9tj4M

Umm...yeah.

The Ganymede Hypothesis has an alternative explanation.  I found it to be fascinating.  Awesome CGI too.