Why Humans Can't Leave the Solar System: The 4 Real Walls

Voyager 1 has been flying for 49 years, and it still hasn't left the Solar System. We look at the four walls that keep us in: the true size of the Solar System out to the Oort cloud, the physics of speed (where a grain of sand hits like a grenade), what space does to bodies and machines, and the hardest one of all: deciding when to go. Then we take apart the word "impossible" itself, from a 1903 newspaper editorial to the Moon. The pictures are real photos and images from NASA, ESA, museums and Wikimedia Commons. #space #science #voyager Images and videos: Voyager (NASA/JPL): NASA/JPL, Public domain — https://commons.wikimedia.org/wiki/File:Vo... The heliosphere and the heliopause: NASA, Public domain — https://commons.wikimedia.org/wiki/File:He... The Kuiper Belt and the Oort Cloud: NASA/ESA and A. Feild (Space Telescope Science Institute), Public domain — https://commons.wikimedia.org/wiki/File:Re... The planets (NASA montage): NASA, Public domain — https://commons.wikimedia.org/wiki/File:Th... Cave paintings, Lascaux: EU, Public domain — https://commons.wikimedia.org/wiki/File:La... Parker Solar Probe: NASA/Johns Hopkins APL/Steve Gribben, Public domain — https://commons.wikimedia.org/wiki/File:Pa... Venus: NASA/JPL-Caltech, Public domain — https://commons.wikimedia.org/wiki/File:PI... The International Space Station: NASA/Roscosmos, Public domain — https://commons.wikimedia.org/wiki/File:IS... The Earth from Apollo 17: NASA/Apollo 17 crew; taken by either Harrison Schmitt or Ron Evans, Public domain — https://commons.wikimedia.org/wiki/File:Th... The first flight, 1903: John T. Daniels, Public domain — https://commons.wikimedia.org/wiki/File:Fi... A bootprint on the Moon, Apollo 11: NASA / Buzz Aldrin, Public domain — https://commons.wikimedia.org/wiki/File:Ap... The Milky Way (ESO): ESO/S. Brunier, CC BY 4.0 — https://commons.wikimedia.org/wiki/File:ES... BGM: Suno AI