MISSION CONTROL CENTER STS-67 Status Report #16 Friday, March 10, 1995; 8 a.m. CST Endeavour sailed into the second half of its mission with no problems hampering science gathering in support of the second astronomy mission. Three of the seven astronauts -- Tammy Jernigan, Wendy Lawrence and Sam Durrance -- are on duty aboard the orbiter managing data gathering with the cluster of telescopes mounted in the payload bay. The remaining four astronauts -- Steve Oswald, Bill Gregory, John Grunsfeld and Ron Parise -- will relieve their co-workers at midday. Lawrence and Durrance spoke with WOR Radio in New York about the mission and its objectives in an early-morning interview. Jernigan later answered a couple of Internet questions forwarded to the crew for response. Endeavour's present altitude is 190 nautical miles meaning the Shuttle is circling the Earth every 91 minutes. The JSC Newsroom is open from 8 a.m. - 5 p.m. weekdays, and from 9 a.m. - 1 p.m. weekends, throughout the mission. NASA's MSFC Newsroom is open from 6 a.m. - 6 p.m. weekdays, and from 6 a.m. - 2 p.m. weekends. MSFC's code-a-phone is updated twice daily and can be reached by calling 205-544-6397.