Dove inizia davvero lo spazio?

When it comes to space, the question seems simple: where does it begin? But the answer is anything but trivial. In this video we explore the famous Kármán Line, the physical, legal and biological boundaries that separate the Earth's atmosphere from outer space. We will discover why sub-orbital flights are not real space missions, what it really takes to be called "astronauts", and what are the limits (not only conventional) that separate us from the cosmic void. With an eye on history, technology and legal implications, we will understand why defining "space" is a more complicated challenge than it seems. 📘 MY NEW BOOK «The cosmos in brief lessons. Big bang, planets, galaxies and black holes: the secrets of astrophysics» Available in all bookstores and online: Amazon - https://amzn.to/3zdwph9 IBS - https://www.ibs.it/cosmo-in-brevi-lez... Feltrinelli - https://www.lafeltrinelli.it/cosmo-in... Mondadori Store - https://www.mondadoristore.it/Il-cosm... 📚 MY OTHER BOOKS All available here → https://amzn.to/3tqfpl1 🎥 WRITTEN AND PRODUCED BY Amedeo Balbi, professor of astronomy and astrophysics at the University of Rome Tor Vergata. 🎵 SIGLA by Litchistudio.com 🔔 SUBSCRIBE TO THE CHANNEL SO AS NOT TO MISS THE NEXT VIDEOS: https://www.youtube.com/c/amedeobalbi... 🔗 FOLLOW ME ALSO ON: 🌐 Official website: https://www.amedeobalbi.it 📸 Instagram:   / amedeobalbi   📘 Facebook:   / amedeobalbiofficial   💬 QUESTIONS, IDEAS, COMMENTS? Write them below: I read everything and often your comments become inspiration for new videos.