* Early Humans: Our earliest ancestors were observant of the natural world to survive. They understood the cycles of the sun and moon, the changing seasons, and the behavior of animals. This was observational, but not necessarily formalized as "science" as we know it today.
* Ancient Civilizations: Many ancient cultures (Mesopotamia, Egypt, China, etc.) made detailed observations of celestial bodies, plant and animal life, and even some rudimentary medical practices. These were often interwoven with mythology and religion, but still represented a desire to understand the world.
* The Birth of Science: The scientific revolution, often associated with figures like Galileo and Copernicus, involved a shift towards a more systematic, evidence-based approach to understanding the world. However, even this was built upon centuries of earlier observations and experimentation.
Instead of a single moment, it's more accurate to say that the foundation of scientific observation was laid gradually over millennia.
Some notable early examples of scientific observation:
* 3000 BC: The Egyptians developed a sophisticated calendar based on their observations of the stars.
* 240 BC: Eratosthenes calculated the circumference of the Earth based on observations of the sun's shadow.
* 1543: Nicolaus Copernicus published his heliocentric model of the solar system, challenging the long-held geocentric view.
Ultimately, "scientific observation" is an ongoing process that continues to evolve as our understanding of the universe grows.