Planets orbiting stars are difficult to detect. Such planets reflect light from their parent stars but don’t emit any brightness of their own; on the other hand, the stars themselves are very bright. This large difference in brightness makes these planets quite elusive as they are overshadowed by their parent stars.
A likely place to test out this theory is Earth. But due to the Earth’s crust being very dynamic, no relics of this stage were left over to be studied. Such remnants may be present on Mars or Mercury and perhaps will be available for study in the coming years. Elkins-Tanton’s study also resulted in conclusions regarding the composition of planets’ surfaces. Therefore, the detection of certain minerals on Mercury for example, can provide additional support to the new theory. The Messenger spacecraft is scheduled to begin a study of Mercury in 2011 and may assist in this task. Furthermore, detection of young planets in this hot stage around stars other than the Sun can also strengthen this conclusion.