What is an Eclipse?

There was a total solar eclipse on this date 15 years ago, but exactly what is a solar eclipse?  How is it different than a lunar eclipse?  Join us today as we find the answers. Sources and to see pictures of how the Earth, moon and sun line up in both kinds of eclipses: https://www.dictionary.com/browse/eclipse?s=t https://eclipse2017.nasa.gov/faq#:~:text=Solar%20eclipses%20are%20fairly%20numerous,as%20a%20few%20years%20apart. https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-an-eclipse-58 https://eclipse.gsfc.nasa.gov/SEmono/TSE2006/TSE2006.html https://www.planetary.org/articles/20170920-guide-to-future-total-solar-eclipses#:~:text=The%20next%20total%20solar%20eclipse,Ocean%20on%204%20December%202021. https://www.timeanddate.com/eclipse/solar/2017-august-21#:~:text=Total%20Solar%20Eclipse%20on%20August%2021%2C%202017%20(Great%20American%20Eclipse%20)