Planetary alignment effect on humans today. Our 50,000+ international membership makes us the largest, independent space advocacy organization in the world. We connect with planetary exploration experts from around the world to strengthen our work and support international exploration efforts. Today, The Planetary Society continues this work, under the leadership of CEO Bill Nye, as the world’s largest and most influential non-profit space organization. Co-founded by Carl Sagan in 1980, The Planetary Society is a member-funded nonprofit organization dedicated to advancing space science and exploration through three core enterprises. They established The Planetary Society to give anyone from anywhere in the world an active role in advancing space exploration. Co-founded by Carl Sagan in 1980, The Planetary Society is a member-funded nonprofit organization dedicated to advancing space science and exploration through three core enterprises. Let The Planetary Society’s weekly podcast take you to the outer reaches of the Solar System and beyond. Jun 8, 2025 ยท No planetary spacecraft, space telescopes, or Earth science missions existed. For over 4 decades, our members have made strides in advancing planetary exploration, planetary defense, and the search for life beyond Earth. The latest stories from The Planetary Society, featuring humanity's quest to explore worlds, find life, and defend Earth. lr53c imi cih ysifk jynpvt iud jkluew 1r5kqt texle fsex