Interstellar Navigation: New Horizons Uses Stellar Parallax

NASA's New Horizons spacecraft, hurtling out of our solar system, offers a unique perspective on the Milky Way. The stars' positions appear significantly different from Earth's view. Scientists have leveraged this parallax effect to achieve the first-ever interstellar navigation using stellar positions. By comparing New Horizons' images of Proxima Centauri and Wolf 359 with data from the Gaia space telescope, researchers calculated the probe's galactic location. While less precise than the Deep Space Network, this method offers advantages at greater distances from Earth, enabling autonomous operation without relying on radio signals from our solar system. Future improvements could significantly enhance accuracy, paving the way for future interstellar missions.