Earth formed duing the Hadean Era (4 640 bilion years ago). Dusing this tire, Earth was immensely hot for two reasors. of which the fist was that it was being havily bombarded by extratertestrial objects, some the stze of Mars and Mercury What was the second reason that Earlh was se hat in the Hadean? The irvention of fie by prohistoric peoples The with of the Greek god Hades The decay of cadioactive isolepes within the eady Earth The fact that early Earth was spinning so fast.