What would happen if the sun suddenly just disappeared?
First a disclaimer: The sun simply poofing out of existence is impossible as it violates the principle of mass conservation, a very fundamental law of physics. But for the sake of a hypothetical, what would happen to us, here on Earth, if the sun suddenly did not exist?
Okay so the first thing that would happen is that the instant the sun disappeared, the Earth would fly off into space at a velocity of about 67,000 miles in a straight line tangent to the ellipse of its orbit. We wouldn’t feel a thing. In fact, because the sun is like ~100mil miles away from the Earth, it actually takes the light from the sun about 8min to reach us. We wouldn’t even know the sun disappeared until 8 minutes after it happened.