The Ocean on Enceladus is Really Big

The video discusses the discovery of a global ocean on Saturn's moon Enceladus, revealed by Cassini data. This ocean, sandwiched between the moon's rocky core and icy crust, could be 26-31 km deep. The presence of water and chemical activity suggests potential for life. The video also covers the International Space Station's milestone with astronauts Scott Kelly and Mikhail Kornyenko's year-long mission, studying long-term space travel effects and astronaut psychology, particularly the third quarter phenomenon.

What psychological phenomenon did astronaut Scott Kelly experience during his previous space mission?

Why is the current mission of Scott Kelly and Mikhail Kornyenko considered special?