Have you ever wondered why, some nights, the moon looks like a big, bright circle, and some nights it looks like a little sliver? Join Jessi and Squeaks to learn about how the moon's orbit changes the way we see it here on Earth! ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: https://www.patreon.com/scishowkids ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow SOURCES: http://moon.nasa.gov/about.cfm http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/moonlight.html http://montana.pbslearningmedia.org/resource/ess05.sci.ess.eiu.mphase/phases-of-the-moon/ http://montana.pbslearningmedia.org/asset/ess05_int_mphase/