Gravity is the mutual attraction between matter right? I heard photons are light particles, so would that mean theres an attraction between photons and photons or photons and regular particles. Since matter is a concentrated form of energy and light is energy wouldn't that mean there would be a mutual attraction between energy(in this case light). Would there also be a attraction between energy and matter. BTW I'm just some curious 14 year old so don't laugh at me :( Forgive me for making a lot of typos.