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
2 • 0 • 343
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
534.38 q