Horizon

Horizon - The boundary marking the apparent intersection between a planet’s surface and sky.

This image is an example of an annular eclipse. As shown, the photosphere of the Sun shines brightly around the Moon in an imperfect ring.

https://apod.nasa.gov/apod/ap130919.html

Author: Nicolas Chacin Vitale, UCF Undergraduate 2017
Editor: Patrick Joiner, UCF Interdisciplinary Studies, Class of 2018
Senior Editor: M.M. Montgomery, Ph.D, UCF Physics