How to achieve Sense of scale in VR, Camera, Texture Related?

I want to build a scene of an Astronaut floating in space around earth and acheive the sensation of scale.
meaing, want to feel Very small and still grasp the size of the planet.

Simple camera gave me the sensation of a huge sphere standing in front of me.
Is it about the Planet's HD texture and height maps? is it about Camera lens and FOV?