When light passes near a massive object like, say, Jupiter, it bends a little instead of travelling in a straight line. The heavier the object, the more is the bend.
This sort of change in the presence of a huge object happens to humans also. From King Kong to Godzilla, Hollywood has made films to depict this.
These films show a massive animal walking into a building or a room full of people, who are going about their businesses, and how this incursion alters their behaviour. Big things in the vicinity make small things behave differently.
And here lies the key
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