NASA has lunched its space shuttle Endeavour to International space station today from Kennedy space center in Florida.
Lets talk about one interesting thing here today-related to space travel. Here on earth there is a great force called "Gravity". Because of this we can walk, and more things possible..........But imagine the place where there is no gravity. You can't even walk on the ground as you are doing here on earth. Here is a video that tells how you use toilet in space-there is no gravity.
Great science and great scientists!