Question

if space have no gravity , why do the planets are in their orbits​

Answer 1

Planets are under the gravitational force exerted by the star around which they revolve. Despite the distance between planet and the star the gravitational pull is sufficient enough to keep the planets in their orbit.

Answer 2

there is gravity everywhere . it gives shape to the orbits of the planets the solar system and even galaxies . gravity form the sun reaches throughout the solar system and beyond keeping the planets in their orbits gravity forms earth keeps the moon and human made satellites in orbits .

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