How long does it take for heat to reach us from the sun?
How long does it take for heat to reach us from the sun? It’s about 8 minutes, the distance between the sun and the Earth because light travels at about 1 billion km/h and the sun is about 150 million km away from the Earth.
Chris - The answer is that heat arrives in the form of light because it's in the form of infra-red radiation, largely, that's reaching us from the sun. It's reaching us in the form of radiation so that too takes 8 minutes to get here.