Astronauts Sunita Williams and Butch Wilmore are still stranded in space. But according to the information, their return is now possible only by next year. US space agency NASA said that the return of astronauts is not possible this year. Now the question is that when an astronaut is in space, how does he know about day and night. In simple language, how does any person know whether it is day or night on Earth. Sunita trapped in space Sunita Williams and Butch Wilmore reached the space station in June…
Read MoreHow would Sunita Williams know the days and months? This is the method
