WASHINGTON -- NASA will host a media teleconference on Thursday, May 15, at 2 p.m. EDT, to provide an overview of progress made in the last few months and work ahead for NASA's Constellation Program. Constellation will build the spacecraft to carry astronauts to the International Space Station and return humans to the moon by 2020. Following the update, NASA managers will answer media questions.

Briefing participants are:

- Jeff Hanley, manager, Constellation Program, NASA's Johnson Space Center, Houston
- Mark Geyer, manager, Orion Project, NASA's Johnson Space Center
- Steve Cook, manager, Ares Projects, NASA's Marshall Space Flight Center, Huntsville, Ala.

Reporters should contact Grey Hautaluoma at 202-358-0668, or Stephanie Schierholz at 202-358-4997, by 11 a.m. Thursday, May 15, for dial-in information.

The teleconference also will be audiocast live on NASA's Web site at:

http://www.nasa.gov/newsaudio

For more information about NASA's Constellation Program, visit:

http://www.nasa.gov/constellation