At the Spring National Air and Space Society lecture, three NASA astronauts with a combined 143 hours of extra-vehicular activity (EVA) will share their stories and experiences of spacewalking in the Shuttle era.

A veteran of four space flights, Michael López-Alegría has logged more than 257 days in space and performed 10 spacewalks totaling 67 hours and 40 minutes. He currently holds the longest all-time EVA duration record of any American.

Story Musgrave was a NASA astronaut for over 30 years and flew on six missions. He performed the first shuttle spacewalk on Challenger’s first flight, was the lead spacewalker on the first Hubble Space Telescope repair mission, and spent 26 hours and 19 minutes on four EVAs.

Sunita Williams has spent a total of 322 days in space on two International Space Station expeditions. With 50 hours and 40 minutes on seven EVAs, she holds the record for cumulative spacewalk time by a female astronaut

The lecture is for members of the Museum’s National Air and Space Society and their guests. There is no charge to attend, but advance reservations are required. Visit airandspace.si.edu/membertickets to reserve yours. Seating is limited. There will also be a buffet reception before the lecture for Society members at the Mercury Friendship 7 level and higher. For more information, call 202.633.2603 or email nasmmembership@si.edu.

The Museum’s doors on Jefferson Drive will be closed for the evening. Please use the Independence Avenue entrance.