1.   And this has an effect on things which are within the reach of that gravitational pull.

2.   And the planet earth is within the reach of gravitational pull and things on the earth are attracted by the moon.

3.   The gravitational pull of the moon pulls the seas towards giving rise to the tides.

4.   Now, you get a high tide here because the gravitational pull of the moon here is very very small.

5.   As the gap between them narrows, their gravitational pull on each other increases according to what is called the inverse square law.

6.   Astronomers once thought the gravitational pull of small bodies like asteroids and comets to be too slight to hold onto moons.

7.   Astronomers take into account the gravitational pull of the sun and the individual planets during the time the comet is within the orbit of Neptune.

8.   Astronomers know that the dark matter, whatever it may be, has to be there because of the way its gravitational pull affects visible things nearby.

9.   Astronomers have measured the effects of huge amounts of gravitational pull in the cosmos by matter they cannot see.

10.   A black hole is a collapsed star with such intense gravitational pull that nothing can escape, not even light.