Who Discovered It

At the southernmost portion of the Earth lies a continent known as Antarctica. It is a landmass that is underlying the South Pole, encircled by the Southern Ocean, and lies completely south of Antarctic Circle in the Antarctic region. The continent of Antarctica is considered to be the driest, coldest, and windiest of all the continents on the Earth and it also has the highest average elevation. Permanent residents are nowhere to be found in this area but there are thousands of researchers who are spread out across the continent residing at their various research stations. Who Discovered Antarctica Since the time of Ptolemy, there is already an existing notion that Southern Land or Terra Australis existed to balance the landmasses of the north. Maps during the 16th century were already depicting large landmass on the southern part of the Earth. This hypothetical landmass is constantly present in any European map until the 18th century. Captain James Cook is the one who discovered Antarctica...

Known as an odorless, colorless and nonmetallic flammable gas, hydrogen is one of the most abundant elements in the universe. This element is important to the formation of stars belonging in the main sequence. However, the gas is very rare in our planet. The chemical element has various industrial uses. Moreover, the element is important to the discovery of the atomic structure. To learn more about this element, it is best if we start with the history of the discovery of hydrogen. Historical Background Who discovered hydrogen? Henry Cavendish discovered the element in 1776. He found out that various elements including hydrogen composed water. Cavendish also discovered the gas from a certain metal-acid experiment that he performed. Antoine Lavoisier named the gas hydrogen in 1783 when he and Pierre-Simon Laplace proved the findings of Cavendish that water could be produced when the gas is burned. The element was first liquefied in 1898 by James Dewar. He did this with the use of a vacuum...

Also called by the names Lejeune’s syndrome, 5p minus syndrome and chromosome 5p deletion syndrome, cri du chat syndrome is a genetic disorder caused by the absence of a part of chromosome 5. Patients usually exhibit cat-like cries. It affects approximately 1 in 20,000 live births. Aside from knowing the different signs and symptoms, causes as well as treatments for this medical condition, it is good to learn more about its history including who discovered cri du chat syndrome. The Discovery of Cri Du Chat Syndrome Who discovered cri du chat syndrome? In 1963, French geneticist Jerome Lejeune first described this disease. He was also a pro-life pediatrician who discovered the connection between chromosome abnormalities and diseases. He devoted a major part of his career treating children affected by Down’s syndrome. Additional Facts and Other Highly Important Information The areas primarily affected by cri du chat syndrome are the nervous system and the larynx, which cause the cries...

Introduction Pisces is constellation of the twelfth and last of the zodiac signs. It is found in that region of the sky known as the Sea. Near Pisces are several other constellations with water symbolism, including the Whale and Aquarius, the eleventh zodiac sign. Unlike other constellations like Orion and Leo, Pisces is difficult to observe since it is very faint. This constellation is visualized as two fishes. It is what the word “Pisces” means in Latin. There is supposed to be a cord joining the two fishes by their tails. The two creatures are swimming in opposite directions. Discovery and History of Pisces Who discovered the constellation Pisces? Well, the Babylonians were the foremost astronomers and astrologers in the ancient world. It is from them that many other constellations have come down to us. Pisces was most likely another one of their discoveries. But the best account we have of the ancients’ view on Pisces comes from the Greeks. The earliest astronomers in Greece did...

Introduction Sagittarius is Latin meaning “archer.” It is so named because early star-gazers thought they saw a figure raising a bow and arrow. The constellation is often visualized as a centaur. Recent investigations by space scientists reveal that Sagittarius has the most planets in it. There are 14 stars in the constellation with planets orbiting them. History of Sagittarius Who discovered the constellation Sagittarius? It was discovered – or rather imagined – by the Babylonians and Sumerians. Or at least was known by their time. The Babylonians said it was the god Pabilsag, “the archer.” He was portrayed with wings and a lion’s head. Later civilizations adopted the same constellation names and groupings used by these two peoples. But some of the imagery changed. In a temple of Isis dating from the time of Cleopatra, one finds the Desdera Ceiling with a zodiac medallion. The medallion depicts all known constellations of the time. It shows Sagittarius as a centaur armed...