NASA has scheduled a press conference this Thursday, Sept 29th to discuss what their latest research has uncovered regarding near-Earth approaching objects like asteroids and comets. In June 2011 an asteroid came within 7,500 miles from Earth for one of the closest encounters in years. Earth’s own gravity actually prevented it from colliding into us. Another close encounter happened last night passing 0.6 LD from Earth and was visible as it passed by. 2 more close encounters are due in mid-October and early November.