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Earth dipole magnetic field
William Gilbert proposes Earth has a dipole magnetic field. Gilbert proposed that the Earth acts like a big magnet. Whose field aligns the small magnet used as a compass needle. -
Earth like planets orbiting all of the stars
Giordano Bruno burned at stake. Bruno was tired before the Inquisition and burned for heresy. Among his heresies was the idea that there were Earth-like, inhabited planets orbiting the infinitely many stars. -
Kepler's supernova
Kepler observes supernova. The telescope was invented a few years after Kepler carried out extensive naked-eye observations of the supernova of 1604. Since the invention of the telescope no supernovas have been observed in the Milky Way. -
Galileo and the Telescope
Galileo uses the telescope for astronomical observations. Galileo didn't even invent the telescope but he was among the first to use a telescope to examine the heavens. He carried out important observations of the Sun, Moon, Planets, and Stars. -
Kepler's discovery of Planetary Motion
Kepler Discovers laws of planetary motion. Working with Tycho's observations, Kepler Discovers the shapes of planetary orbits, how the speed of a planet varies as it orbits the Sun and the relationship between orbital distance and orbital period. -
Galileo observes the Plant Venus and its phases
Galileo observes phases of Venus. Galileo found that Venus shows all the phases from new to full. This observation was incompatible with Ptolemaic model of the Solar System. -
Galileo Discovers Four Large Satellites of Jupiter
Galileo Discovers the four largest satellites of Jupiter. Galileo found that Jupiter is orbited by four large satellites, now called, collectively, the Galilean satellites. This proved that at least some celestial bodies didn't orbit the Earth. -
Francis Bacon: Earth continents move around
Francis Bacon suggests that Earth's continents move about. Bacon noticed that the eastern and western shores of Atlantic were parallel and could be fitted together. -
Descartes Developed Inertial Motion
Descartes develops concept of inertial motion. Descartes believed that all motion resulted from collision with particles called "corpuscles". In the absence of such collisions, a body remains at rest. An object in motion continues to move in the same direction at the same speed. -
Galileo publishes "The Dialouge"
Galileo publishes "The Dialogue". The Dialogue, although superficially a balanced debate about the merits of the geocentric and heliocentric models of the solar system, was in fact a powerful argument for the ideas of Copernicus. Galileo was brought before the Inquisition and spent the last nine years of his life under house arrest. -
.Bishop Ussher uses Bible to calculate the age of Earth
Bishop Ussher uses Bible to calculate age of Earth. From the chronology of Biblical events, Ussher concluded that the Earth was created in 4004 BC. -
The Maunder minimum
Maunder minimum. During the Maunder minimum almost no spots were seen on the Sun. This was also a time of cold climate in Western Europe and North America.
