sentence: Summer falls on that part of the globe where sunlight strikes most directly.
sentences_before: When Earth is closest to the sun, it is winter in the northern hemisphere and summer in the southern hemisphere. Thus it is possible to see that Earth's distance from the sun does not cause the season to change. Earth's axis is tilted to that plane by 23.5 degrees. Winter falls on that part of the globe where sunlight strikes least directly.
concept_name: summer
headings: Perihelion
categories: Celestial mechanics