Sunita williams and butch wilmore will return to earth after 8 months know how astronauts walk on the ground
Indian -origin astronaut Sunita Williams and Buch Wilmore may return to the land soon. Please…
2 months ago
gravity force
Gravity Force: Is gravity same everywhere on earth? It is very less in this country of the world
Most people must be aware of gravity. Whenever there is talk of gravitational force, the…
10 months ago