Final answer:
The Nebular Hypothesis was developed by Immanuel Kant and Pierre-Simon Laplace. According to this hypothesis, our solar system formed from a spinning, flattened disk of gas and dust.
Step-by-step explanation:
The Nebular Hypothesis was developed by Immanuel Kant and Pierre-Simon Laplace. According to this hypothesis, our solar system formed from a spinning, flattened disk of gas and dust. This theory suggests that the planets, including Earth, were formed from the condensation of this disk over time.