Comet Shoemaker–Levy 9 and well within the orbit of Jupiter's innermost moon Metis and the planet's Roche limit, inside which tidal forces are strong enough to disrupt a body held together only by gravity. Although the comet had approached Jupiter closely before, the July 7 encounter seemed to be by far the closest, and the fragmentation of the comet is thought to have occurred at this time. Each fragment of the comet was denoted by a letter of the alphabet, from "fragment A" through to "fragment W", a practice already established from previously observed broken-up comets. More exciting for planetary astronomers was that
Social media and television a sign of superficiality." Interactive media such as Amazon's Alexa and Apple's Siri have enabled computers to interact with people in human-like ways. "Computers, in the way that they communicate, instruct and take turns interacting, are close enough to humans that they encourage social responses. The encouragement is necessary for such a reaction need not be much. As long as there are some behaviors that suggest a social presence, people will respond accordingly." The exponential growth in the number of social media users between 2006 and 2016 has impacted how television shows are marketed. As well, the huge increase in