M02: Hardball

M02: Hardball is the second mission in Metroid Prime: Federation Force. The Galactic Federation detects a mysterious signal being broadcast from the planet Bion, which has been tracked to the interior of a temple on the planet. The Federation Force is tasked with discovering the source of the signal. At the end of the mission, it is discovered that the source is a spherical artifact, which may represent the Orb, and they must escape the planet with it.

Mission description
"Discover the source of a mysterious signal coming from within a temple on Bion."