86.07 q
Science and Technology
0 • 0 • 16
i am completing my 12th science this year and i want to start preparing to become an astronaut
34.75 q
Science and Technology
3 • 0 • 348
i know its impossible to build the same gun which can pull me from ground to a 10 storey high building, but a simple one which can just throw the grappelin
536.13 q