A planet needs to start with a lot of water to become like Earth

In satellite formation, arsenic successful poker, you person to play nan manus you’re dealt. If an Earthlike satellite is nan goal, nan champion starting manus mightiness incorporate 3 to 8 times each nan h2o successful Earth’s oceans.

“There’s benignant of a saccharine spot,” says Keavin Moore, a planetary intelligence astatine McGill University successful Montreal. Less water, and nan satellite dries out. More water, and it ends up soggy, Moore and colleagues study successful a insubstantial submitted June 28 to arXiv.org.