Hey kids, have you seen a microscope before? The scientists here on board need it to look at very thin slices of rock, which have been cut from the cores. They are so thin that you can shine light through them and see all of the details in the rock.
Did you know rocks are made of different kinds of minerals?
Lots of the minerals have different colors, so when you use the microscope, the grey rocks might have all the colors of the rainbow.