STS-90 Payload Specialist Jay Buckey, M.D. (at left), and Pilot Scott Altman arrive at Kennedy Space Center's Shuttle Landing Facility in preparation for the launch of Columbia on April 16 at 2:19 p.m. EDT from KSC's Launch Pad 39B. The launch of Neurolab on STS-90, which will be the second mission of 1998, is scheduled to last nearly 17 days