You might not know it, but there are thousands of human-made satellites orbiting the Earth! They help us do everything from study the climate to make phone calls, and there are even some satellites that people can live on! ---------- 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: https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-satellite-k4.html https://solarsystem.nasa.gov/planets/solarsystem/moons https://history.nasa.gov/sputnik/ http://www.ucsusa.org/nuclear-weapons/space-weapons/what-are-satellites-used-for#bf-toc-5 https://www.livescience.com/39678-incredible-tech-track-hurricanes.html https://www.space.com/24839-satellites.html https://www.nasa.gov/audience/forstude