system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it ok to watch a sunrise/sunset but its not okay to look directly at the sun?
gpt
During the sunrise and sunset, less of the sun's rays are shining on your location, and they travel through more air to reach you. This causes the beams into change to a less harmful intensity, and allows you to look properly at the sun.