Complex sentence: A single lighted object was spotted and filmed in the middle of the night, apparently by several different tourists, descending over Jerusalem's Dome of the Rock, hovering briefly, producing a flash of light, and then ascending into the sky.
Split into simpler sentences: A single lighted object was allegedly spotted and filmed in the middle of the night by several different tourists. It reportedly descended over Jerusalem's Dome of the Rock, hovering briefly, producing a flash of light, and then ascending into the sky.