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Amir Siraj
Amir Siraj (born in 2000) is an American astrophysicist, pianist, and science and music communicator. Career Astrophysics Siraj earned bachelor's and master's degrees at Harvard University, and is currently pursuing his PhD at Princeton University. His research is primarily focused on interstellar objects, asteroids and comets, planetary system formation and evolution, supernovae, black holes, dark matter, and the search for life in the universe. Recently, he proposed the existence of unseen captured planets in the outer solar system. He discovered CNEOS 2014-01-08, the first known interstellar meteor, and as the Director of Interstellar Object Studies at the Galileo Project, is involved with the search and discovery mission for the interstellar object. His research was named one of CNN's extraordinary cosmic revelations and moments in space exploration in 2022. He was the youngest scientist named to the Forbes 30 Under 30 list in 2021, and ''Astronomy'' magazine named h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackets
A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'right' bracket or, alternatively, an "opening bracket" or "closing bracket", respectively, depending on the directionality of the context. Specific forms of the mark include parentheses (also called "rounded brackets"), square brackets, curly brackets (also called 'braces'), and angle brackets (also called 'chevrons'), as well as various less common pairs of symbols. As well as signifying the overall class of punctuation, the word "bracket" is commonly used to refer to a specific form of bracket, which varies from region to region. In most English-speaking countries, an unqualified word "bracket" refers to the parenthesis (round bracket); in the United States, the square bracket. Various forms of brackets are used in mathematics, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supernova
A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the ''progenitor'', either collapses to a neutron star or black hole, or is completely destroyed. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months. Supernovae are more energetic than novae. In Latin, ''nova'' means "new", referring astronomically to what appears to be a temporary new bright star. Adding the prefix "super-" distinguishes supernovae from ordinary novae, which are far less luminous. The word ''supernova'' was coined by Walter Baade and Fritz Zwicky in 1929. The last supernova to be directly observed in the Milky Way was Kepler's Supernova in 1604, appea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Nations General Assembly
The United Nations General Assembly (UNGA or GA; french: link=no, Assemblée générale, AG) is one of the six principal organs of the United Nations (UN), serving as the main deliberative, policymaking, and representative organ of the UN. Currently in its 77th session, its powers, composition, functions, and procedures are set out in Chapter IV of the United Nations Charter. The UNGA is responsible for the UN budget, appointing the non-permanent members to the Security Council, appointing the UN secretary-general, receiving reports from other parts of the UN system, and making recommendations through resolutions. It also establishes numerous subsidiary organs to advance or assist in its broad mandate. The UNGA is the only UN organ wherein all member states have equal representation. The General Assembly meets under its president or the UN secretary-general in annual sessions at the General Assembly Building, within the UN headquarters in New York City. The main part o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UNESCO
The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. It has 193 member states and 12 associate members, as well as partners in the non-governmental, intergovernmental and private sector. Headquartered at the World Heritage Centre in Paris, France, UNESCO has 53 regional field offices and 199 national commissions that facilitate its global mandate. UNESCO was founded in 1945 as the successor to the League of Nations's International Committee on Intellectual Cooperation.English summary). Its constitution establishes the agency's goals, governing structure, and operating framework. UNESCO's founding mission, which was shaped by the Second World War, is to advance peace, sustainable development and human rights by facilitating collaboration and dialogue among nations. It pursues this objec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yo-Yo Ma
Yo-Yo Ma ('' Chinese'': 馬友友 ''Ma Yo Yo''; born October 7, 1955) is an American cellist. Born in Paris to Chinese parents and educated in New York City, he was a child prodigy, performing from the age of four and a half. He graduated from the Juilliard School and Harvard University and attended Columbia University and has performed as a soloist with orchestras around the world. He has recorded more than 90 albums and received 19 Grammy Awards. In addition to recordings of the standard classical repertoire, Ma has recorded a wide variety of folk music, such as American bluegrass music, traditional Chinese melodies, the tangos of Argentine composer Astor Piazzolla, and Brazilian music. He has collaborated with artists in diverse genres, including the singer Bobby McFerrin, the guitarist Carlos Santana, Sérgio Assad and his brother, Odair, and the singer-songwriter-guitarist James Taylor. Ma's primary performance instrument is a 1733 Montagnana cello valued at US$2.5 mill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Presidential Scholar
The United States Presidential Scholars Program is a program of the United States Department of Education. It is described as "one of the Nation's highest honors for students" in the United States of America and the globe. The program was established in 1964 by Executive Order of the President of the United States to recognize the most distinguished graduating seniors for their accomplishments in many areas: academic success, leadership, and service to school and community. In 1979, it was expanded to recognize students who demonstrate exceptional scholarship and talent in the visual, creative, and performing arts. In 2015, the program was expanded once again to recognize students who demonstrate ability and accomplishment in career and technical fields. In the recent past, the organization has welcomed nominations from individual recommenders of the students' own choosing regardless of whether these students' academic results or achievements otherwise qualified them for recog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steinway Artist
Steinway & Sons, also known as Steinway (), is a German-American piano company, founded in 1853 in Manhattan by German piano builder Heinrich Engelhard Steinweg (later known as Henry E. Steinway). The company's growth led to the opening of a factory in New York City, United States, and later a factory in Hamburg, Germany. The factory in the Queens borough of New York City supplies the Americas, and the factory in Hamburg supplies the rest of the world. Steinway is a prominent piano company, known for making pianos of high quality and for inventions within the area of piano development. Steinway has been granted 139 patents in piano making, with the first in 1857. The company's share of the high-end grand piano market consistently exceeds 80 percent. The dominant position has been criticized, with some musicians and writers arguing that it has blocked innovation and led to a homogenization of the sound favored by pianists. Steinway pianos have received numerous awards. One ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific American
''Scientific American'', informally abbreviated ''SciAm'' or sometimes ''SA'', is an American popular science magazine. Many famous scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it. In print since 1845, it is the oldest continuously published magazine in the United States. ''Scientific American'' is owned by Springer Nature, which in turn is a subsidiary of Holtzbrinck Publishing Group. History ''Scientific American'' was founded by inventor and publisher Rufus Porter (painter), Rufus Porter in 1845 as a four-page weekly newspaper. The first issue of the large format newspaper was released August 28, 1845. Throughout its early years, much emphasis was placed on reports of what was going on at the United States Patent and Trademark Office, U.S. Patent Office. It also reported on a broad range of inventions including perpetual motion machines, an 1860 device for buoying vessels by Abraham Lincoln, and the universal joint which now can be found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomy (magazine)
''Astronomy'' is a monthly American magazine about astronomy. Targeting amateur astronomers, it contains columns on sky viewing, reader-submitted astrophotographs, and articles on astronomy and astrophysics for general readers. History ''Astronomy'' is a magazine about the science and hobby of astronomy. Based near Milwaukee in Waukesha, Wisconsin, it is produced by Kalmbach Publishing. ''Astronomy''’s readers include those interested in astronomy and those who want to know about sky events, observing techniques, astrophotography, and amateur astronomy in general. ''Astronomy'' was founded in 1973 by Stephen A. Walther, a graduate of the University of Wisconsin–Stevens Point and amateur astronomer. The first issue, August 1973, consisted of 48 pages with five feature articles and information about what to see in the sky that month. Issues contained astrophotos and illustrations created by astronomical artists. Walther had worked part time as a planetarium lecturer at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galileo Project
''Galileo'' was an American robotic space program that studied the planet Jupiter and its moons, as well as several other Solar System bodies. Named after the Italian astronomer Galileo Galilei, the ''Galileo'' spacecraft consisted of an orbiter and an entry probe. It was delivered into Earth orbit on October 18, 1989 by on the STS-34 mission, and arrived at Jupiter on December 7, 1995, after gravitational assist flybys of Venus and Earth, and became the first spacecraft to orbit Jupiter. It launched the first probe into Jupiter, directly measuring its atmosphere. Despite suffering major antenna problems, ''Galileo'' achieved the first asteroid flyby, of 951 Gaspra, and discovered the first asteroid moon, Dactyl, around 243 Ida. In 1994, ''Galileo'' observed Comet Shoemaker–Levy 9's collision with Jupiter. Jupiter's atmospheric composition and ammonia clouds were recorded. Io's volcanism and plasma interactions with Jupiter's atmosphere were also recorded. The data ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space
Space is the boundless three-dimensional extent in which objects and events have relative position and direction. In classical physics, physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to an understanding of the physical universe. However, disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework. Debates concerning the nature, essence and the mode of existence of space date back to antiquity; namely, to treatises like the ''Timaeus'' of Plato, or Socrates in his reflections on what the Greeks called '' khôra'' (i.e. "space"), or in the '' Physics'' of Aristotle (Book IV, Delta) in the definition of ''topos'' (i.e. place), or in the later "geometrical conception of pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CNEOS 2014-01-08
CNEOS 2014-01-08 is an interstellar object reported in June 2019 by astronomers Amir Siraj and Abraham Loeb, and confirmed by the United States Space Command in April 2022. The discovery was publicized in 2019 in a preprint announcing a meteor detected on 8 January 2014 near the northeast coast of Papua New Guinea. Discovery and confirmation According to the researchers, the meteor originated from an unbound hyperbolic orbit with a confidence of 99.999%. The interstellar candidate was found in data from the Center for Near-Earth Object Studies. The estimated speed of the meteor, around , was likely produced in the innermost cores of another stellar system. A 2019 study by Jorge I. Zuluaga published as a research note by the American Astronomical Society concluded that even if the direction were completely unknown, the probability that CNEOS 2014-01-08 was hyperbolic would still be 48%. Confirmation was originally stymied by the problem that crucial information quantifying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
