Tired of the same old Tuesday dinner? Try an earthly recipe from the Harvard-Smithsonian Center for Astrophysics: “1 cup magnesium, 1 cup silicon, 2 cups iron, 2 cups oxygen, 1/2 teaspoon aluminum, 1/2 teaspoon nickel, 1/2 teaspoon calcium, 1/4 teaspoon sulfur, dash of water.” The catch? The H2O must come from asteroids, and you need to place your ball of goodness near a young star. Scientists hope the “recipe” will help them spot a new Earth in the heavens. But you may want to stick with spaghetti tonight.