Space Knowledge: - Zenith - Space DocumentarySpace Knowledge: The Launchers, Space Telescopes & Space Communication: https://youtu.be/_DSJ-GprDOE00:00 Earth The most important planet in the solar system is our home, the Earth. It is the only planet we know that harbours life.This episode looks at the growing understanding of the Earth’s complex climatic systems and the part on-orbit observation plays in the growth of knowledge about our planet.25:20 Future DirectionsSpace technologies are continuing to be refined and access to space is becoming cheaper.This episode looks at the development of new human-rated spacecraft, reusable boosters, laser communications, the Ion Drive and new techniques to refuel satellites in space.▬▬▬▬▬▬▬▬▬Subscribe Free Documentary Channel for free: https://bit.ly/2YJ4XzQJoin the club and become a Free Documentary Patron: https://www.patreon.com/freedocumentaryInstagram: https://instagram.com/free.documentary/Facebook: https://bit.ly/2QfRxbGTwitter: https://bit.ly/2QlwRiI▬▬▬▬▬▬▬▬▬#FreeDocumentary #Documentary #Zenith▬▬▬▬▬▬▬▬▬Free Documentary is dedicated to bringing high-class documentaries to you on YouTube for free. With the latest camera equipment used by well-known filmmakers working for famous production studios. You will see fascinating shots from the deep seas and up in the air, capturing great stories and pictures from everything our beautiful and interesting planet has to offer. Enjoy stories about nature, wildlife, culture, people, history and more to come.