This is a GIF of solar insolation. It is showing our Earth's Solar insolation throughout the year of 2019. Solar Insolation is a certain type of measurement that shows how much energy from the sun is hitting each square meter. If you were to look above you would see the legend which explains how much solar insolation is in each area by the colors shown. So, where there are darker colors there is less Solar insolation and where there are lighter colors there is more Solar insolation.