Question

which theory says that the moon formed from the dust produced by collision between earth and another large body

Answer 1

Answer is
The impact theory

Answer 2

Giant Impact Hypothesis

Step-by-step explanation:

Giant Impact hypothesis is the most supported theory for the formation of the Moon. According to this theory a large Mars sized celestial body, commonly named as Theia, collided with Earth around 20 to 100 million years after Solar System coalesced. During this collision huge chunk of Earth's crust was thrown in to space which later came together due to the gravity and formed the Moon.

The strongest evidences for this theory are:

1. The similarity between the Earth's and Moon's rocks implying common origin.

2. Similar orientation of spin of Earth and Moon's orbit.