27/10/2017
https://www.youtube.com/watch?v=ve06l_tpbKA&lc=z22jdxlwbtywx1udmacdp435242eu0il3th5dkmtax1w03c010c
satellite/artificial satellite how works(Bengali+English) উপগ্রহ/কৃত্রিম উপগ্রহ কিভাবে এটা কাজ করে A satellite is any object that moves in a curved path around a planet. The moon is Earth's original, natural satellite, and there are many man-made (artifici...