2018 USA Science and Engineering Festival

Attendees listen as a NASA staff member speaks about NASA's Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer, or OSIRIS-REx, mission during Sneak Peek Friday at the USA Science and Engineering Festival, Friday, April 6, 2018 at the Walter E. Washington Convention Center in Washington, DC. The festival is open to the public April 7-8. Photo Credit: (NASA/Joel Kowsky)