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ohannes Kepler was one of the leading characters in the history of astronomy. His most famous achievement was the three laws of planetary motion, still taught in courses today. However, like all other human beings, he was not perfect and made mistakes

Johannes Kepler was one of the most influential figures in the history of astronomy. His three laws of planetary movement changed the world of science significantly and became a foundation for other scientists to build theories upon.

Nonetheless, there are theories in his past that are not even close to reality.

The number of observed exoplanets - worlds circling distant stars - has passed 1,000.

These new worlds are listed in the Extrasolar Planets Encyclopaedia.

The Kepler space telescope, which spotted many of these worlds in recent years, broke down earlier this year. Scientists still have to trawl through more than 3,500 other candidates from this mission so the number could rapidly increase.

Astronomers announced on Tuesday that they had found eight new planets orbiting their stars at distances compatible with liquid water, bringing the total number of potentially habitable planets in the just-right “Goldilocks” zone to a dozen or two

As the ranks of these planets grow, astronomers are planning the next step in the quest to end cosmic loneliness: gauging which hold the greatest promise for life and what tools will be needed to learn about them.

recalled that the first discovery of a planet orbiting another normal star, a Jupiter-like giant, was 20 years ago. Before that, she said, astronomers worried that “maybe the ‘Star Trek’ picture of the universe was not right, and there is no life anywhere else.”

Aristotelian thought had dominated mathematics and astronomy for centuries, until revolutionaries like Nicolaus Copernicus and Galileo Galilei challenged those views.

The mathematization of physics was a crucial step in the advancement of science. It was realized that the mathematical tools we had at the time weren’t strong enough.

By trial and error, Kepler worked and worked until finally, he hit upon the shape that worked—elliptical orbits with the Sun at one focus. It turned out to perfectly fit the known observations.

Armand Marie Leroi is a scientist, and Aristotle is his hero. This conjunction is interesting because, in the official telling of modern science’s origins, Aristotle is hardly regarded as heroic. Instead he’s portrayed as the obstacle over which the early heroes of the scientific revolution — Copernicus, Kepler, Galileo — had to leap in order to impose a genuinely explanatory methodology over the often deceptive input of sense perception.

What Aristotle had sundered, the celestial and the terrestrial, were united under one mechanics. And the rest, as they say, is history.

He cannot mention Plato without hissing, often characterizing him as anti-scientific or, at the very best, a poor scientist: “Plato’s science is barely distinguishable from theology.” Instead Leroi’s heart belongs to Aristotle, who not only was, like him, an enthusiastic student of biology, particularly of zoology, but who also, unlike Plato, was besotted by the world of appearances. Aristotle, as Leroi makes wonderfully clear, exemplifies one kind of scientific aptitude. He was an enthralled observer of the natural world, bedazzled by data, seeking causal explanations not in abstract numbers but in concrete details acquired through avid sense perception.