On this day in 1633, Italian philosopher, astronomer and mathematician Galileo Galilei arrives in Rome to face charges of heresy for advocating Copernican theory, which holds that the Earth revolves around the Sun. Galileo officially faced the Roman Inquisition in April of that same year and agreed to plead guilty in exchange for a lighter sentence. Put under house arrest indefinitely by Pope Urban VIII, Galileo spent the rest of his days at his villa in Arcetri, near Florence, before dying on January 8, 1642.

Galileo, the son of a musician, was born February 15, 1564, in Pisa, Italy. He entered the University of Pisa planning to study medicine, but shifted his focus to philosophy and mathematics. In 1589, he became a professor at Pisa for several years, during which time he demonstrated that the speed of a falling object is not proportional to its weight, as Aristotle had believed. According to some reports, Galileo conducted his research by dropping objects of different weights from the Leaning Tower of Pisa. From 1592 to 1630, Galileo was a math professor at the University of Padua, where he developed a telescope that enabled him to observe lunar mountains and craters, the four largest satellites of Jupiter and the phases of Jupiter. He also discovered that the Milky Way was made up of stars. Following the publication of his research in 1610, Galileo gained acclaim and was appointed court mathematician at Florence.

Galileo’s research led him to become an advocate of the work of the Polish astronomer Nicolaus Copernicus (1473-1573). However, the Copernican theory of a sun-centered solar system conflicted with the teachings of the powerful Roman Catholic Church, which essentially ruled Italy at the time. Church teachings contended that Earth, not the sun, was at the center of the universe. In 1633, Galileo was brought before the Roman Inquisition, a judicial system established by the papacy in 1542 to regulate church doctrine. This included the banning of books that conflicted with church teachings. The Roman Inquisition had its roots in the Inquisition of the Middle Ages, the purpose of which was to seek out and prosecute heretics, considered enemies of the state.

Today, Galileo is recognized for making important contributions to the study of motion and astronomy. His work influenced later scientists such as the English mathematician and physicist Sir Isaac Newton, who developed the law of universal gravitation. In 1992, the Vatican formally acknowledged its mistake in condemning Galileo.

HISTORY.COM
Date: 2009-02-13

The theologian, musician, philosopher and Nobel Prize-winning physician Albert Schweitzer is born on this day in 1875 in Upper-Alsace, Germany (now Haut-Rhin, France).

The son and grandson of ministers, Schweitzer studied theology and philosophy at the universities of Strasbourg, Paris and Berlin. After working as a pastor, he entered medical school in 1905 with the dream of becoming a missionary in Africa. Schweitzer was also an acclaimed concert organist who played professional engagements to earn money for his education. By the time he received his M.D. in 1913, the overachieving Schweitzer had published several books, including the influential The Quest for the Historical Jesus and a book on the composer Johann Sebastian Bach.

Medical degree in hand, Schweitzer and his wife, Helene Bresslau, moved to French Equatorial Africa where he founded a hospital at Lambarene (modern-day Gabon). When World War I broke out, the German-born Schweitzers were sent to a French internment camp as prisoners of war. Released in 1918, they returned to Lambarene in 1924. Over the next three decades, Schweitzer made frequent visits to Europe to lecture on culture and ethics. His philosophy revolved around the concept of what he called “reverence for life”–the idea that all life must be respected and loved, and that humans should enter into a personal, spiritual relationship with the universe and all its creations. This reverence for life, according to Schweitzer, would naturally lead humans to live a life of service to others.

Schweitzer won widespread praise for putting his uplifting theory into practice at his hospital in Africa, where he treated many patients with leprosy and the dreaded African sleeping sickness. Awarded the Nobel Peace Prize for 1952, Schweitzer used his $33,000 award to start a leprosarium at Lambarene. From the early 1950s until his death in 1965, Schweitzer spoke and wrote tirelessly about his opposition to nuclear tests and nuclear weapons, adding his voice to those of fellow Nobelists Albert Einstein and Bertrand Russell.

HISTORY.COM
Date: 2009-01-14