the Solar Nebula Theory

What is the Solar Nebula Theory?

The solar nebula theory, also known as thenebular hypothesis, is the most widely accepted model explaining the formation and evolution of oursolar system. It was originally applied to our solarsystem only but, this method of planetary system formation is now thought to hold true throughout the universe.

What does the SNT state?

The Solar Nebular Hypothesis describes the formation of our SolarSystem from a nebula cloud made from a collection of dust and gas. It is believed that the sun, planets, moons and asteroids were formed around the same time around 4.5 billion years ago from a nebula.

Who developed the SNT?

The theory was developed by Immanuel Kant and published in his Universal Natural History and Theory of the Heaven. Originally applied to our own Solar System, this process of planetary system formation is now thought to be at work throughout the universe

When was the theory developed?

There is evidence that parts of the nebular hypothesis were first proposed in 1734 by Emanuel Swedenborg. Immanuel Kant, who was familiar with Swedenborg's work, developed the theory further in 1755, when Kant published his Universal Natural History and Theory of the Heavens, wherein he argued that gaseous clouds, nebulae, slowly rotate, gradually collapse and flatten due to gravity, eventually forming stars and planets.