Practice Class 8 MCQs From Textbooks
Download Earth Science Quiz App | Space Astronomy Book PDF
Earth Science Study Material: Practice Test 7 (Chapter 21)
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For every action there is equal and opposite reaction this was Newton's
A space vehicle which is reusable and lands like an aero plane is called a
An orbit which is less than 1500 km above the surface of earth is called
The first space station was built by America named as
The first satellite of NASA was
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