"Why traveling one light-year is harder than you think | Brian Greene

Renowned physicist Brian Greene breaks down one of the most mind-bending questions in space travel: how long would it actually take humanity to cover the distance of a single light-year? In this clip, Greene explores the staggering scale of cosmic distances, the physical limits imposed by the speed of light, and what current and future propulsion technology could realistically achieve. A fascinating dive into relativity, spacetime, and the true challenges of interstellar travel. 🔭 Learn more about the physics of space, time, and the universe with one of the world's leading theoretical physicists. 👍 Like, comment, and subscribe for more science content. 🔔 Turn on notifications so you don't miss future uploads. Hashtags: #briangreene , #physics , #spacetravel , #lightyear , #astrophysics , #cosmology , #relativity , #science , #spaceexploration , #universe Tags: Brian Greene, light year, space travel, speed of light, physics, astrophysics, theoretical physics, relativity, spacetime, interstellar travel, cosmology, science education, string theory, space documentary, science explained, NASA, general relativity, quantum physics, science communication, space and time Disclaimer: This video is intended for educational and informational purposes only. All content, including commentary and analysis, reflects the views of the featured speaker and is provided for general knowledge. Viewers should consult additional scientific sources for in-depth research. No copyright infringement intended; if you are the rights holder of any content featured and have concerns, please contact us for prompt resolution.