Are we really the center of the universe? Spoiler: No, we aren’t. Today, we’re unraveling the stories of seven revolutionary astronomers who forever changed our perception of the cosmos. The latest episode of the podcast ‘Cosmic Echoes’ explores how their determination reshaped our understanding of the universe.
Nicholas Copernicus: A New Perspective
In the 15th century, Nicholas Copernicus challenged the belief that Earth was the center of the universe. His heliocentric model, placing the Sun at the center, sparked the Scientific Revolution, encouraging people to question long-held beliefs.
Galileo Galilei: The Power of Observation
Galileo Galilei, born in 1564, used his improved telescope to observe the phases of Venus and moons of Jupiter, supporting the heliocentric model. His commitment to observation led to his trial by the Catholic Church, but he paved the way for future scientists to challenge dogma.
Johannes Kepler: Elliptical Orbits
Johannes Kepler, born in 1571, used Tycho Brahe’s data to discover that planets move in ellipses, not circles. His three laws of planetary motion provided a foundation for understanding celestial movements.
Isaac Newton: The Law of Gravity
Isaac Newton, born in 1643, explained gravity as a force between all objects, transforming astronomy into a predictive science. He also invented the reflecting telescope, allowing for deeper exploration of the cosmos.
Edwin Hubble: The Expanding Universe
In the 20th century, Edwin Hubble used the Hooker Telescope to observe that galaxies are moving away from us, providing evidence for the expanding universe and the Big Bang Theory.
Stephen Hawking: Black Holes
Stephen Hawking, born in 1942, proposed that black holes emit radiation, linking quantum mechanics with general relativity. His book, “A Brief History of Time,” popularized complex scientific ideas.
Carl Sagan: Making Science Accessible
Carl Sagan, born in 1934, made science accessible and inspiring to the public. His “Pale Blue Dot” image highlighted Earth’s fragility, and his work on NASA’s Voyager Golden Record was a testament to humanity’s curiosity.
Watch Now
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