Answer :
Because the sun serves as an extended source, the moon's shadow has a dark center surrounded by a zone of rising brightness.
What do you know about the sun?
The star at the core of the solar system is the Sun. It is a nearly perfect ball of hot plasma that has been heated to incandescence by nuclear fusion processes in its center. The energy it radiates is primarily visible light, ultraviolet, and infrared radiation. It is the most crucial source of energy for life on Earth. The Sun has a radius that is around 109 times greater than that of the Earth, or 695,000 kilometers (432,000 miles). Its mass is approximately 330,000 times that of the Earth and makes up 99.86% of the solar system's total mass. The Sun's mass is made up of roughly 73% hydrogen and 24% helium, with much lesser amounts of heavier elements including oxygen, carbon, neon, and iron.
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