- Frank Oz (Bert)
- Sonia Manzano (Maria Figueroa Rodriguez)
- Roscoe Orman (Gordon Robinson)
- Martin P. Robinson (Telly Monster/Aloysius Snuffleupagus/Irvine/Slimey (voice))
- Suki Lopez (Nina)
- Violet Tinnirello (Charlie)
- Jennifer Barnhart (Zoe (voice))
- Ryan Dillon (Elmo (voice))
- Alan Muraoka (Alan)
Sesame Street — S17E93
Episode: Episode 2188
Air Date: 1986-03-26
Overview
At dusk, Oscar shows Luis and the kids a demonstration of how the Earth revolves around the sun, using a large apple as the Earth (with Slimey inside) and a flashlight as the sun, which Luis operates. Bob encounters Oscar arguing with Telly about whether nighttime is a happy time or a sad time. Oscar gives his reasons why it’s a happy time, and Telly gives his reasons why it’s. Sponsors: D, G, 8