Trinity weighs 40 different moon rocks out of the 358 rocks that were brought back from the Moon. Most of the space rocks came from the dark side of the Moon.

Trinity weighs approximately (40/358) * 100% = 11.17% of the moon rocks.

To determine the number of space rocks that came from the dark side of the Moon, we need to subtract the rocks Trinity weighed from the total number of rocks brought back.

The number of space rocks from the dark side of the Moon can be calculated as follows:

Total number of rocks brought back from the Moon - Rocks Trinity weighed = Space rocks from the dark side of the Moon

Therefore,

358 - 40 = **318 space rocks from the dark side of the Moon**

To find out how many moon rocks came from the dark side of the Moon, we need to subtract the number of rocks Trinity weighed from the total number of rocks brought back from the Moon.

Total number of rocks brought back from the Moon = 358

Number of rocks Trinity weighed = 40

So, to find the number of rocks that came from the dark side of the Moon, we can subtract the number of rocks Trinity weighed (40) from the total number of rocks brought back from the Moon (358):

Number of rocks from the dark side of the Moon = Total number of rocks brought back from the Moon - Number of rocks Trinity weighed
= 358 - 40
= 318

Therefore, 318 moon rocks came from the dark side of the Moon.