This is how sunlight reaches earth surface
How is the sun shining? Sun is a massive celestial body that contains tonnes of gas in its core. These gases go under continuous chemical reactions called fusion, an infinite number of particles combining to form a new particle & the process continues. Why don't we get burnt due to the heat energy of light? This giant ball of gas is having a diameter of order 10^6 km in comparison to which our teeny-tiny planet's diameter is of order 10^4 km, however, both have separation of around 1.27*10^8 km. Now what we know is that our planet is enveloped by layers of the atmosphere. These layers are divided on the basis of there particulates. Light has to pass all these layers before reaching the Earth's surface. When anything hits something is produces some impact & the fast-moving object gets slower, the same happens with light. When light enters into the earth's atmosphere it loses its energy to reach the surface. These layers are:- Ionosphere Mesosphere Stratosphere Tr...