1. His passion for exploration led him to become an astronaut, and he joined NASA in 1966.

2. The astronaut was also asked whether he has noticed any differences between him and his brother.

3. Each astronaut had their skin scanned just before going into space, and again on their return.

4. White was the first American astronaut to walk in space.

5. The crew list shows a national flag next to each astronaut, and reveals details about them.

6. As the astronaut traveled, the voice warned to prepare for zero gravity.

7. Glenn is the only astronaut to fly into space in a Mercury suit and a space shuttle suit.

8. The astronaut acknowledged the dangerous nature of spaceflight.

9. NASA requires a day off between spacewalks for astronaut rest.

10. China plans to open a space station around 2020 and send an astronaut to the moon after that.

11. A photo tweeted by astronaut Scott Kelly is generating plenty of extraterrestrial buzz.

12. The astronaut conducted hundreds of experiments during his 340 days in space.

13. The Orion is akin to an astronaut taxi, albeit a highly advanced one.