Activity

Oh, lovely data about the moon and earth and I love the fact Lauren starts with -We THINK something the size of mars hit the earth…no absolute truth. https://www.youtube.com/watch?annotation_id=annotation_900754849&feature=iv&list=UUiefLm_nIz_gOH7XHbgpdCQ&src_vid=Gpv_IkO_ZBU&v=5BfwlCJQ9lg