92.72 q
Science and Technology
1 • 0 • 20
i am completing my 12th science this year and i want to start preparing to become an astronaut
36.15 q
Science and Technology
3 • 0 • 360
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
540.33 q