Yes, if an object has a sufficiently large mass, it can indeed have its own gravity. Gravity is a fundamental force in nature that arises due to the presence of mass and energy. According to Einstein's theory of general relativity, mass and energy curve the fabric of spacetime, creating what we perceive as gravitational attraction.
The strength of gravity depends on the mass of an object. The more massive an object is, the stronger its gravitational field. For example, the Earth has a large enough mass to generate a gravitational force that keeps objects, including us, bound to its surface.
In the context of astrophysics, objects with significant mass, such as stars, planets, and even galaxies, possess their own gravitational fields. These fields influence the motion of other nearby objects, causing them to be attracted toward the massive object.
It's important to note that the concept of having its own gravity doesn't necessarily imply that an object will be able to overcome other gravitational forces acting upon it. In a system with multiple massive objects, the gravitational interactions between them can be complex, and the resulting motion depends on the masses and distances involved.
In summary, objects with substantial mass indeed have their own gravitational fields, and the strength of gravity depends on the mass of the object. However, the overall gravitational effect in a given system depends on the interplay between the masses and distances of all objects involved.