96.57 q
Science and Technology
1 • 0 • 25
i am completing my 12th science this year and i want to start preparing to become an astronaut
37.9 q
Science and Technology
3 • 0 • 376
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
545.93 q


