Caption: Earth's umbra and penumbra as caused by the Sun.
Features:
To be a bit more precise, NO part of the solar photosphere (which is the layer from which most light escapes from the Sun) can be seen by straight line light ray transmission.
We discuss the solar photosphere in IAL 8: The Sun.
As we discuss IAL 3: The Moon: Orbit, Phases, Eclipses, and More: The Coppery Colored Moon, there is some curved-line light ray transmission due to atmospheric refraction, and so the umbra will NOT be totally dark.
EOF
php require("/home/jeffery/public_html/astro/eclipse/eclipse_keywords.html");?>