https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm en-us 2020-11-03 18:54:43 UTC 2020-11-20 01:55:32 UTC hello@padlet.com jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/887473920 Nicolaus Copernicus was born in February 19, 1473 in Torun, Poland. He proposed that Earth, as well as  other planets, revolved around the sun.However, his theory was that the sun was stationary, as it was in the center of the universo. Although he was right about planets revolving around the sun, he  was brong about the sun being tsationary, for it rotates as well. He was also wront about the sun being in the center of the universe. ]]> 2020-11-03 19:06:40 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/887473920 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/887558260 Isaac Newton was born in December 25, 1642, in Woolsthorpe Manor House, U.K. He shaped the word today for not only inventing the laws of motion and gravity, but also for inventing calculus, which is used in astronomy. Newton was also one of the very first to create a reflecting telescope. This, along with his three Laws of Motion, lay an important foundation for the understanding of universal gravitation.]]> 2020-11-03 19:28:39 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/887558260 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888148213 Claudius Ptolemy was born in 100 AD in Alexandria, Egypt. Contrary to what Copernicus believed, Ptolemy believed that the Earth was at th center of the Universe, and that the planets, sun, moon and stars orbited around it. This became known as the "geocentric theory". This theory was later on disproved. ]]> 2020-11-03 23:31:13 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888148213 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888167657 In March 14 of  1879, Albert Einstein was born. He devised a theory and named it relativity. IN short, this theory supported the notion that space and time were linked together, and that the universe had a speed limit. This was because he concluded that nothing would be able to travel faster than the speed of light, which is 186,000 miles per second.  Aside from this, he created an equation used for physics, which to this day is still used to help astronomers study the gravitational waves in Mercury's orbit. ]]> 2020-11-03 23:44:14 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888167657 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888195533 Brahe was born in December 14, 1546 in Denmark. Like many other astronomers before him, Tycho Brahe believed in geocentricism. However, he influenced astronomy a lot because he created many  astronomical instruments such as the Tyonian Quadrant, which was used to locate astronomical objects, according to where they were on the quadrant at the time. Brahe was this, along with making some of the most accurate findings of planetary positions, some of which we still use today. ]]> 2020-11-04 00:02:21 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888195533 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888222322 In oxford, England of January 8, 1942, a great mind was born.  The man with this great mind was named Stephen Hawking. Although dealing with medical conditions, Hawking made his discovery of black holes, and the radiation it had, which could be detected by an instrument. This radiation is known as the Hawking radiation, and nothing can escape from it.]]> 2020-11-04 00:18:47 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888222322 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888239388 Hipparchus was born at around 190 BC, in Nicea, Greece. For starters, Hipparchus measured the distance between the Earth  and moon correctly, using trigonometry. He also observed a nova, as well as equinoxes. Hipparchus  also studied the eclipses, as well as the Earth's precession.]]> 2020-11-04 00:28:08 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/888239388 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/944076990 Johannes Kepler was born in December 27 of 1571 in Germany. He is notorious for his three laws of planetary motion. Kepler discovered that the planets, as well as the Earth, traveled around the sun in specific orbits. ]]> 2020-11-20 01:35:40 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/944076990 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/944093442 The famous astronomer, Galileo Galilei was born on February 15 of 1564 in Pisa, Italy. He invented a telescope and used it to discover dour of Jupiter's moons. He also used this telescope to study Saturn, and used these observations to support Copernicus' theory that the planets all revolve around the sun. Galileo also studied the sunspots, and the phases of Venus. ]]> 2020-11-20 01:44:33 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/944093442 jacobmar0121 https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/944106973 The construction of Stonehenge started in 3000 BC. Although there are many mysteries relating to this work, one of the theories is that it was built by ancient astronomers, who used the giant stones to predict eclipses of the moon and sun. ]]> 2020-11-20 01:52:16 UTC https://padlet.com/jacobmar0121/agv7jw1olhkfh9jm/wish/944106973