For the purposes of this simulation, a pure-metal planet has a density of 8 grams per cubic centimeter (the density of iron) and a pure-rock planet has a density of 3 grams per cubic centimeter (an average value for silicate rock). Questions to Consider:
Depending on how cooked you like your hard boiled eggs, the eggs should be done perfectly in 10-12 minutes. That said, depending on your altitude, the shape of the pan, the size of the eggs, the ratio of water to eggs, it can take a few minutes more.. Turn off the heat, keep the pan on the hot burner, cover, and let sit for 10-12 minutes. If you have the type of stove burner that doesn't retain any heat when turned off, you might want to lower the temp to low, simmer for a minute, and then turn it off.
This is the way I will always make my hard (non) boiled eggs. Preheat the oven to 325 degrees. Place the eggs inside a mini muffin pan. Put the pan into the oven and bake for 30 minutes. Remove from the oven and carefully place the eggs into a bowl of cold water for 10 minutes. Drain the water and peel the eggs. Enjoy.