This March 30, 1969 photo made available by NASA shows the crew of the Apollo 11, from left ... walk to the van that will take the crew to the launchpad at Kennedy Space Center on Merritt Island ...

Apollo 11 astronaut Michael Collins returned Tuesday ... NASA spokesman Bob Jacobs said Aldrin, 89, bowed out of the launch pad visit, citing his intense schedule of appearances.

(AP) — Apollo ... launch pad visit, citing his intense schedule of appearances. Aldrin and Collins may reunite in Washington on Friday or Saturday, the 50th anniversary of Apollo 11′s moon ...

(AP) — Apollo 11 astronaut Michael Collins returned Tuesday ... Michael Collins and Buzz Aldrin walk to the van that will take the crew to the launchpad at Kennedy Space Center on Merritt ...

CAPE CANAVERAL, Fla. — Apollo 11 astronaut Michael Collins returned Tuesday to the exact spot where he and two other astronauts flew to the moon 50 years ago. At NASA's invitation, Michael ...

Apollo 11 astronaut Michael Collins returned Tuesday ... NASA spokesman Bob Jacobs said Aldrin bowed out of the Florida launch pad visit, citing his intense schedule of appearances.