Was the moon split into two parts at a certain time?

I’m not sure what you[re referring to, but the current theory is that the Moon is the result of a collision with early Earth and a Mars-sized planetessimal.   Early on when the Earth was completely molten, the heavier elements (iron, etc.) were falling to the center of the Earth leaving behind a less-dense outer layer/crust.  When the collision happened, it ripped off that outer most layer and was flung out into orbit around Earth and eventually came together to form our Moon.  This is the reassemble it, it is the result of two bodies collided with one another!

Brad Bailey

NLSI Staff Scientist

August 3, 2009

NESF 2019

ISRU 2019

Lunar Landing Workshop

Upcoming Events

May


6th IAA Planetary Defense Conference
April 29 - May 3 (College Park, MD)

NASA Robotic Mining Competition
May 6-10 (KSC)

European Lunar Symposium
May 21-23 (Manchester, UK))

JpGU 2019
May 26-30 (Chiba, Japan)

View More Upcoming
View Past Events

SSERVI Team Science

Did you know?

The lunar day (or the time from sunrise to sunrise) on the moon is approximately 708 hours.

Read More