On January 20th, former astronaut Buzz Aldrin – who was the second man to walk on the Moon and has been a longtime advocate of space exploration – will turn 80 years old. Wouldn't you like to send him some birthday wishes? Well, you can! The Planetary Society is collecting birthday wishes to be put on a "ginormous card" honoring his 80th trip around the Sun. Originally, the card was to be presented at a ceremony where Stephen Hawking would also receive the Planetary Society's Cosmos Award, but Hawking has been advised by his doctors to refrain from flying to California for the event.