Tom Hanks honored astronaut Jim Lovell, whom he portrayed in "Apollo 13," with a touching tribute celebrating the space pioneer’s bravery and extraordinary life.

Tom Hanks posted a tribute on social media to James Lovell, who died on Aug. 7. Lovell was a NASA astronaut known for commanding the troubled Apollo 13 mission. That mission was turned into a hit 1995 film from director Ron Howard starring Hanks as Lovell.