[Video Credit: NASA, Surveyor 3; Acknowledgement: R. D. Sampson (ECSU)]
Used to tell my kids that a solar eclipse was when the moon passed between the earth and the sun. Lunar was when sun passed between the earth and the moon.
Son came home angry one day when he figured it out at school.
And, the 1967 Surveyor 3 SSV with an eternal loop added: