Extraterrestrial life is hypothetical life that may occur outside Earth and which did not originate on Earth. Such life might range from simple prokaryotes to intelligent beings and even sapient beings, possibly bringing forth civilizations that might be far more advanced than humanity. The Drake equation speculates about the existence of sapient life elsewhere in the universe. The science of extraterrestrial life in all its forms is known as astrobiology.
The flat Earth model is an archaic conception of Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat Earth cosmography, including Greece until the classical period, the Bronze Age and Iron Age civilizations of the Near East until the Hellenistic period, and China until the 17th century.
Isaac Asimov was an American writer and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. Asimov was a prolific writer, and wrote or edited more than 500 books. He also wrote an estimated 90,000 letters and postcards.
The Moon is Earth's only natural satellite. At about one-quarter the diameter of Earth, it is the largest natural satellite in the Solar System relative to the size of its planet, the fifth largest satellite in the Solar System overall, and is larger than any known dwarf planet. Orbiting Earth at an average distance of 384,400 km (238,900 mi), or about 30 times Earth's diameter, its gravitational influence slightly lengthens Earth's day and is the main driver of Earth's tides. The Moon is classified as a planetary-mass object and a differentiated rocky body, and lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's ; Jupiter's moon Io is the only satellite in the Solar System known to have a higher surface gravity and density.
Edward Higgins White II was an American aeronautical engineer, United States Air Force officer, test pilot, and NASA astronaut. He was a member of the crews of Gemini 4 and Apollo 1.
Manhattan is a city and county seat of Riley County, Kansas, United States, although the city extends into Pottawatomie County. It is located in northeastern Kansas at the junction of the Kansas River and Big Blue River. As of the 2020 census, the population of the city was 54,100. The city was founded by settlers from the New England Emigrant Aid Company as a Free-State town in the 1850s, during the Bleeding Kansas era. Nicknamed "The Little Apple" as a play on New York City's "Big Apple", Manhattan is best known as the home of Kansas State University and has a distinct college town atmosphere. Fort Riley, a United States Army post, is located 8 miles (13 km) west of Manhattan.
Richard Siegmund Lindzen is an American atmospheric physicist known for his work in the dynamics of the middle atmosphere, atmospheric tides, and ozone photochemistry. He has published more than 200 scientific papers and books. From 1983 until his retirement in 2013, he was Alfred P. Sloan Professor of Meteorology at the Massachusetts Institute of Technology. He was a lead author of Chapter 7, "Physical Climate Processes and Feedbacks," of the Intergovernmental Panel on Climate Change's Third Assessment Report on climate change. He has disputed the scientific consensus on climate change and criticizes what he has called "climate alarmism."
Alouette 1 is a deactivated Canadian satellite that studied the ionosphere. Launched in 1962, it was Canada's first satellite, and the first satellite constructed by a country other than the Soviet Union or the United States. Canada was the fourth country to operate a satellite, as the British Ariel 1, constructed in the United States by NASA, preceded Alouette 1 by five months. The name "Alouette" came from the French for "skylark" and the French-Canadian folk song of the same name.
USS Kearsarge (CV/CVA/CVS-33) was one of 24 Essex-class aircraft carriers completed during or shortly after World War II for the United States Navy. The ship was the third US Navy ship to bear the name, and was named for a Civil War-era steam sloop. Kearsarge was commissioned in March 1946. Modernized in the early 1950s as an attack carrier (CVA), she served in the Korean War, for which she earned two battle stars. In the late 1950s she was further modified to become an anti-submarine carrier (CVS). Kearsarge was the recovery ship for the last two manned Project Mercury space missions in 1962–1963. She completed her career serving in the Vietnam War, earning five battle stars.
The Dialogue Concerning the Two Chief World Systems is a 1632 Italian-language book by Galileo Galilei comparing the Copernican system with the traditional Ptolemaic system. It was translated into Latin as Systema cosmicum in 1635 by Matthias Bernegger. The book was dedicated to Galileo's patron, Ferdinando II de' Medici, Grand Duke of Tuscany, who received the first printed copy on February 22, 1632.
Avram Davidson was an American writer of fantasy fiction, science fiction, and crime fiction, as well as the author of many stories that do not fit into a genre niche. He won a Hugo Award and three World Fantasy Awards in the science fiction and fantasy genre, a World Fantasy Life Achievement award, and an Ellery Queen's Mystery Magazine short story award and an Edgar Award in the mystery genre. Davidson edited The Magazine of Fantasy and Science Fiction from 1962 to 1964. His last novel The Boss in the Wall: A Treatise on the House Devil was completed by Grania Davis and was a Nebula Award finalist in 1998. The Encyclopedia of Science Fiction says "he is perhaps sf's most explicitly literary author".
The Reedy Glacier is a major glacier in Antarctica, over 160 km (100 mi) long and from 10 to 19 km wide, descending from the polar plateau to the Ross Ice Shelf between the Michigan Plateau and Wisconsin Range, and marking the limits of the Queen Maud Mountains on the west and the Horlick Mountains on the east.
Julie Ann Felix was an American-born, British-based folk recording artist who achieved success, particularly on British television in the late 1960s and early 1970s. She later performed and released albums on her own record label.
Fact and Fancy is a collection of seventeen scientific essays by American writer and scientist Isaac Asimov. It was the first in a series of books collecting his essays from The Magazine of Fantasy and Science Fiction, and Asimov's second book of science essays altogether. Doubleday & Company first published it in March 1962. It was also published in paperback by Pyramid Books as part of The Worlds of Science series.
Thomas Glen Alexander is an American historian and academic who is a professor emeritus at Brigham Young University (BYU) in Provo, Utah, where he was also Lemuel Hardison Redd, Jr. Professor of Western History and director of the Charles Redd Center for Western Studies. After studying at Weber State University (WSU) and Utah State University (USU), he received a PhD from the University of California, Berkeley in 1965. He taught history at BYU from 1964 until 2004, and served in the leadership of various local and historical organizations.
James Murdoch MacGregor, was a Scottish journalist and author best known for writing science fiction under the pen name J.T. McIntosh.
Jeffrey Burton Russell is an American historian and religious studies scholar.
Color in Chinese culture refers to the certain values that Chinese culture attaches to colors, like which colors are considered auspicious (吉利) or inauspicious (不利). The Chinese word for "color" is yánsè (顏色). In Classical Chinese, the character sè (色) more accurately meant "color in the face", or "emotion". It was generally used alone and often implied sexual desire or desirability. During the Tang Dynasty, the word yánsè came to mean all color. A Chinese idiom which is used to describe many colors, Wǔyánliùsè (五顏六色), can also mean colors in general.
Before the scientific search for and study of extrasolar planets, the possibility was argued through philosophy and science fiction. The mediocrity principle suggests that planets like Earth should be common in the Universe, while the Rare Earth hypothesis suggests that they are extremely rare. The thousands of exoplanetary star systems discovered so far are profoundly different from the Solar system, supporting the Rare Earth Hypothesis.
The 2010 eruptions of Eyjafjallajökull were a period of volcanic events at Eyjafjallajökull in Iceland which, although relatively small for volcanic eruptions, caused enormous disruption to air travel across western and northern Europe over an initial period of six days in April 2010. Additional localised disruption continued into May 2010, and eruptive activity persisted until June 2010. The eruption was declared officially over in October 2010, after 3 months of inactivity, when snow on the glacier did not melt. From 14–20 April, ash from the volcanic eruption covered large areas of Northern Europe. About 20 countries closed their airspace to commercial jet traffic and it affected approximately 10 million travellers.
