The Curious Mind

The urge to look towards the sky stems from an intrinsic human curiosity emanating out of not just scientific but also existential queries

- Aditya Misra

From this distant vantage point, the Earth might not seem of any particular interest. But for us, it’s different. Consider again that dot. That’s here, that’s home, that’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every “superstar,” every “supreme leader,” every saint and sinner in the history of our species lived there—on the mote of dust suspended in a sunbeam.

This was American astronomer Carl Sagan talking about Earth, a pale blue dot, as seen from the edge of our solar system. The photo was clicked by NASA's Voyager 1 spacecraft in 1990 before it exited our solar system.

The idea behind the “pale blue dot” was to capture an image of Earth from a greater distance than ever before. The decision, however, came after much deliberation. Clicking the photo required pointing Voyager 1’s camera towards the sun, which posed a risk to its imaging system. It also required months-long calibrations for a snapshot that would be of no practical use. Even Sagan admitted the image would have no scientific value. He, nevertheless, insisted on it being taken as it would provide a much-needed perspective on our place in the universe.