Genuinely we can’t tell what it is. We once thought it was just a normal pull due to mass until Einstein proved us wrong during a solar eclipse where we could see stars that shouldn’t be visible from our current position in orbit. Then we get into how it works, WHICH THERE IS NO TELLING AS THERE ARE TO MANY GOD DAMNED VARIABLES INVOLVED.
You’re fucking with me, right?
Stars were visible that shouldn’t have been visible?
What am I missing?
Gravity bends space itself (which makes it able to bend light). It’s really fucky. https://en.wikipedia.org/wiki/Tests_of_general_relativity#Deflection_of_light_by_the_Sun
It also fucks with time. If you saw the movie Interstellar, you know what this refers to.
Stars that were behind the sun (within the radius of the sun, geometrically speaking) were visible due to gravitational lensing