Twitter social media suddenly featured the trending Kpop girl band Kep1er. Mentioning the name of this Girls Planet 999 graduate, suddenly remembered a Johannes Kepler. Who's he?
Johannes Kepler was a German astronomer who discovered the three laws of planetary motion. Born December 27, 1571 in Weil der Stadt, Württemberg, Germany, Kepler grew up at a time when scientists had a big debate as a result of the publication of the book "De Revolutionibus Orbium Coelestium" by Copernicus which presented the heliocentric theory.
Education
His love for the world of astronomy grew thanks to the role of his mother. As a child, his mother who loved nature often took Kepler out at night to observe the stars.
Kepler also had the opportunity to witness firsthand a comet in 1577 and a lunar eclipse in 1580. Kepler children began to have an interest in outer space objects.
He started his formal education at the German School, then the Latin School in 1576 and then continued to the Protestant Seminary in Adelberg which is a monastic school in 1584. Because he had a desire to become a priest, in 1589 he continued his education to college level.
With his intelligence, Kepler received a scholarship to study at the University of Tübingen. There he not only studied religion or theology but also Greek, philosophy, astronomy, and mathematics.
Kepler received his degree from the University of Tübingen in 1588. While studying there, he studied closely the heliocentric hypothesis of Copernicus and immediately believed it.
After leaving the University of Tübingen, Kepler was appointed professor at an academy in Graz. There he published his first book on astronomy in 1596. In that book he wrote a theory which some scientists thought was wrong.
However, Kepler's work proves his mathematical abilities. When many scholars rejected his theory, the famous astronomer Tycho Brahe was impressed by his writings and invited Kepler to become an assistant at his observatory near Prague. Kepler joined Tycho Brahe in January 1600, but the following year Brahe died.
Planetary research
Kepler then glimpsed by the ruler of Rome at the time, Rudolph II. He was then appointed to replace Brahe as royal mathematician, for most of the rest of his life.
Kepler got a lot of notes from Brahe's observations of the planets that he had studied over the years. Brahe himself was a great astronomer who did research into the sky before the invention of the telescope.
Kepler believed that the results of Brahe's observations when analyzed mathematically would produce a correct theory of planetary motion. But he was quite disappointed after learning that Brahe's theory, or any other classical astronomer's theory, only described the orbits of the planets as spherical. In fact, planetary orbits are not spherical but slightly elliptical.
After conducting a series of research and calculations from the hypotheses of classical astronomers, Kepler succeeded in making two laws regarding the motion of the planets. He wrote his theory into the book Astronomia Nova, published in 1609.
Conventionally, the laws of planetary motion he discovered were defined as follows:
1. Each planet revolves around the sun in an elliptical orbit
2. Planets move faster when they are closer to the Sun, so each planet has a different speed of rotation.
Ten years later, Kepler issued his third law which reads: The farther a planet is from the Sun, the longer it takes to make a revolution.
Kepler's laws, which provide a complete picture of the motion of the planets, solve the fundamental problems of astronomy that have been the subject of much debate.
The discovery of Kepler is said to be able to solve problems beyond Copernicus and Galileo. Although Isaac Newton explained why the planets moved in such orbits, Kepler paved the way for all the theories of later celestial scientists.
End of life
In contrast to his brilliant brain and revolutionary discoveries, Kepler's life was very bleak and not easy because he lived in the midst of the religious conflict that was going on at that time.
Various unfortunate events such as the death of his first wife, Barbara Müller, his mother who was almost executed on charges of being a witch in the 1920s, to the loss of a source of income.
While he was working as a mathematician for the city of Linz, Austria, he and his family were also ostracized and sometimes persecuted because their religion was different from that of the city's residents. The worsening state of conflict in the city finally forced Kepler and his family to leave the city in 1626.
Having no more income, he tried his luck to predict his horoscope to the rich and nobles. He fell ill and died at the age of 58 on November 15, 1630 in Regensburg, Germany.
It is unfortunate that the difficult events from his childhood to his death due to war situations contributed to the destruction and disappearance of Kepler's tomb.
So the inspiration for the name of the Kpop girl band
Mnet's survival show, Girls Planet 999, in South Korea in October 2021 resulted in nine members debuting under the group name Kep1er.
Shortly after the announcement, Kep1er finally created an official social media account.
Their group name is a combination of 'Kep' which means reaching for a dream and number 1 which means 9 girls together to become one to be the best. This name is also recognized as a reference to the name of the German astronomer, Johannes Kepler.
Swing Entertainment is the agency that will manage all Kep1er's schedules. On January 3, 2022 they released their first mini album titled First Impact. The song WA DA DA was used as the main song on the album. This album got 200 thousand pre-orders.
