GLaDOS, a homocidal artificial intelligence, exiled Wheatley, a corrupted core, to space before freeing Chell, the main antagonist of the Portal series, from her Aperture days and one fateful day picks up a blazing object rushing towards the Aperture Science Enrichment Center's private parking lot- for Aperture Science employers. GLaDOS identifies the spherical object to be a very a, very irritated Wheatley. He has been orbiting the very axis of Earth itself. Also, GLaDOS has some very unexpected visitors.

From The Bones We Work...With A Half Complete Life