Apophis 99942 is a 370-metre-wide near-Earth orbit space rock that continues to pose a destructive threat. Initial observations from the space agency in 2004 revealed a probability of 2.7 percent that it could strike Earth in 2029, but additional observations later ruled this date out, claiming it would pass through a gravitational keyhole setting up a potential future impact in 2036. By late 2008, the probability that Apophis would pass through the gravitational keyhole was determined to be very small ... Read even more
