India's second lunar expedition -- would shed light on a completely unexplored section of the Moon, its South Polar region
Isro has set up a Directorate of Space Situational Awareness and Management aimed at protecting high-value space assets
How space travel and long-duration missions might change the human body, and whether those changes are permanent or reversible once astronauts return to Earth, is largely unknown
Life support system and conditioning of astronauts for the space environment is one of the key technological challenges