Thousands watched Friday night as a spectacular display of fireballs streaked across the skies over Britain, prompting some eyewitnesses to contact the police about what they thought could be a crashing plane or UFO. One person speaking to the BBC described the aerial spectacle as a "beautiful sight, like something out of [the sci-fi movie] Independence Day." Experts think the fireballs were caused by man-made space debris, possibly an object the size of a tennis ball, burning up as it fell back to the planet. More at The Telegraph.