RICHMOND (AP).- A team of scientists will launch an expedition to the Titanic next month to assess the deteriorating condition of the world’s most famous shipwreck and create a detailed three-dimensional map that will “virtually raise the Titanic” for the public. The expedition to the site 2½ miles beneath the North Atlantic is billed as the most advanced scientific mission to the Titanic wreck since its discovery 25 years ago. The 20-day expedition is to leave St. John’s, Newfoundland, on Aug. 18 under a partnership between RMS Titanic Inc., which has exclusive salvage rights to the wreck, and the Woods Hole Oceanographic Institution in Massachusetts. The expedition will not collect artifacts but will probe a 2-by-3-mile debris field where hundreds of thousands of artifacts remain scattered. Some of the world’s most frequent visitors to the site will be part of the expedition along with a who’s who of underwater scientists and organizations such as the National Oceanic and Atmo