The Sun's heat and light reach Earth through a process known as radiation. The intensity of this radiation diminishes with distance according to the inverse square law. According to the inverse square law, if you double the distance from a source of radiation, the intensity of that radiation decreases to one-fourth (1/2^2) of its original value.
The Sun is currently located about 93 million miles (150 million kilometers) away from Earth on average. This distance is known as an astronomical unit (AU). If we were to move the Sun farther away from Earth, the intensity of its heat and light would decrease. However, even at vast distances, the Sun would still emit a significant amount of heat and light due to its immense energy output.
If we were to speculate, it would require the Sun to be located at a significantly greater distance than its current position for us not to feel its heat and light on Earth. However, it's important to note that such a scenario would have a wide range of consequences beyond just the absence of heat and light. Earth's climate, ecosystems, and even the survival of life as we know it would be dramatically affected if the Sun were to be relocated to such extreme distances.