Our world is a big ball of rock. There are rocks on the ground and rocks under the ground. The deeper a rock is under the ground, the more everything above it presses down on it and the more it gets hot. This pressing and hot change the rocks deep inside our world so that they are different from the rocks on the ground, even if all the rocks are made of the same thing to start with.
Some other worlds close to us in space are also balls of rock - like the small round thing that passes through the sky every night as it moves around us, and the red world that is the next one past us away from the Sun.
I study how the rocks change deep inside our world and inside other worlds near us, as they get hot and are pressed on under ground. But how can I study this if I can’t go hundreds of hundreds of feet under ground?
I am able to grow a piece of what is down there by pressing hard hard hard on a very tiny piece of rock and making it hot at the same time. The rock responds and changes as if it were deep under ground. Then I can look at the tiny new rock I made and study what happened to it.
-Lora (Experimentally studies rocks and minerals at high pressure and temperature in planetary interiors)”—