Question

Why foes light always go straight

Answer 1

why because the light rays are affected by the gravitional force and the attraction will be opposite of gravitational that s why light travels straight

Answer 2

hey dear.

the light always go straight  because the light rays are affected by the gravitional force and the attraction will be opposite of gravitational / But there is one thing Isaac Newton wasn't aware of: Gravity can bend light (or rather the space through which the light travels) which causes light to travel in curves.

hope it helps..