CAPE CANAVERAL, Fla. — Former NASA astronaut Buzz Aldrin was noticeably absent from a gala kicking off a yearlong celebration of the 50th anniversary of the first moon landing, even though his nonprofit space education foundation is a sponsor and he typically is the star attraction.

Aldrin said he didn’t attend Saturday’s Apollo Celebration Gala because of objections over the foundation’s current aims and ongoing legal matters associated with the foundation.

Buzz Aldrin

The former astronaut is locked in a legal battle with family members who say he is suffering from mental decline.

The black-tie event, held under a Saturn V rocket at the Kennedy Space Center, featured a panel discussion by astronauts, an awards ceremony and an auction of space memorabilia.

Hundreds of people attended the sold-out event, including British physicist Brian Cox, who presented Virgin Galactic founder Richard Branson with the ShareSpace Foundation’s Innovation award.

Branson, whose company is developing a new generation of commercial spacecraft, said in a recorded video that the Apollo missions influenced his generation.

“Space is still hard, really hard. It still really matters,” Branson said. “There would be no Virgin Galactic, no Virgin Orbit and no spaceship company had it not been for Apollo astronauts and the thousands of talented people who made their mission possible.”

Dr. Carolyn Williams of the nonprofit From One Hand To AnOTHER received the foundation’s Education award, and former Johnson Space Center director Gerry Griffin, a flight director for all the crewed Apollo missions, received the Pioneer award.