Question

Question #c4236

Answer 1

The gravitational field created by humans isn't strong enough to pull even the smallest of masses. So it cannot pull a human.
Stars do collide with other stars when they are caught in each others gravitational field. (Other phenomenon also take part in this).

Explanation:

Everything with mass has a gravitational field. The larger the mass the stronger the gravitational field. This gravitational field attracts other objects with mass.

Humans have a very small mass ( In the unit of the cosmos ) so they create a VERY VERY VERY weak gravitational field. This gravitational field cannot even attract a speck of dust let alone a human.

This changes when we look at objects with very large masses.
A star has a very large mass so it must have a strong gravitational field. This gravitational field is strong enough to attract planets.

Example `->` Our sun has a gravitational field that keeps all the planets in orbit.

Now when two stars are caught in each others gravitational field ( along with other factors) they go into a decaying orbit and eventually crash into each other. Though this does not happen very often and the mechanisms behind this are not understood very well. ( As far as i know).