# Solar system and atom theory? A single atom has a shield and electron around it. The farther the shield, the weaker the attraction of electron. So how about the sun and the planet. Is it the same theory?

## What is the Oort Cloud?

Oct 28, 2017

There are some parallel ideas, but it isn’t the same theory. Saying that, the connection you have spotted caused some excitement among the scientific community at the time.

#### Explanation:

The force on a planet is given by Newton’s universal law of gravitation ($F = - G . \frac{{m}_{1.} {m}_{2}}{r} ^ 2$)

The force on an electron circling the nucleus is given by $F = \frac{1}{4 \pi {\epsilon}_{0}} \frac{{q}_{1.} {q}_{2}}{r} ^ 2$

They are similar, both varying inversely with distance squared, but not identical - it is mass that causes gravitational attraction, and charge that causes electrostatic attraction.

Oct 28, 2017

The Oort Cloud is a region of space occupied by long period comets, dust, grit and bits way beyond the orbit of Pluto.

#### Explanation:

It is still part of the solar system, but very weakly bound to the Sun.