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Marc Kuchner
Marc Kuchner (born August 7, 1972) is an American astrophysicist, a staff member at NASA's Goddard Space Flight Center (GSFC) known for work on images and imaging of disks and exoplanets. Together with Wesley Traub, he invented the band-limited coronagraph, a design for the proposed Terrestrial Planet Finder (TPF) telescope, also to be used on the James Webb Space Telescope (JWST). He is also known for his novel supercomputer models of planet-disk interactions and for developing the ideas of ocean planets, carbon planets, and helium planets. Kuchner appears as an expert commentator in the National Geographic television show "Alien Earths" and frequently answers the "Ask Astro" questions in Astronomy Magazine. He currently serves as the principal investigator of the citizen science websites Disk Detective and Backyard Worlds. Background Kuchner was born in Montreal, Quebec, Canada. He received his bachelor's degree in physics from Harvard in 1994 and his Ph.D. in astronomy from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montreal
Montreal ( ; officially Montréal, ) is the List of the largest municipalities in Canada by population, second-most populous city in Canada and List of towns in Quebec, most populous city in the Provinces and territories of Canada, Canadian province of Quebec. Founded in 1642 as ''Fort Ville-Marie, Ville-Marie'', or "City of Mary", it is named after Mount Royal, the triple-peaked hill around which the early city of Ville-Marie is built. The city is centred on the Island of Montreal, which obtained its name from the same origin as the city, and a few much smaller peripheral islands, the largest of which is Île Bizard. The city is east of the national capital Ottawa, and southwest of the provincial capital, Quebec City. As of 2021, the city had a population of 1,762,949, and a Census Metropolitan Area#Census metropolitan areas, metropolitan population of 4,291,732, making it the List of the largest municipalities in Canada by population, second-largest city, and List of cen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helium Planet
A helium planet is a planet with a helium-dominated atmosphere. This contrasts with ordinary gas giants such as Jupiter and Saturn, whose atmospheres consist primarily of hydrogen, with helium as a secondary component only. Helium planets might form in a variety of ways. Gliese 436 b is a possible helium planet. Formation There are several hypotheses for how a helium planet might form. Hydrogen evaporation from giant planets A helium planet might form via hydrogen evaporation from a gaseous planet orbiting close to a star. The star will drive off lighter gases more effectively through evaporation than heavier gasses, and over time deplete the hydrogen, leaving a greater proportion of helium behind. A scenario for forming helium planets from regular giant planets involves an ice giant, in an orbit so close to its host star that the hydrogen effectively boils out of the atmosphere, evaporating from and escaping the gravitational hold of the planet. The planet's atmosphere will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1972 Births
Within the context of Coordinated Universal Time (UTC) it was the longest year ever, as two leap seconds were added during this 366-day year, an event which has not since been repeated. (If its start and end are defined using mean solar time he legal time scale its duration was 31622401.141 seconds of Terrestrial Time (or Ephemeris Time), which is slightly shorter than 1908). Events January * January 1 – Kurt Waldheim becomes Secretary-General of the United Nations. * January 4 - The first scientific hand-held calculator (HP-35) is introduced (price $395). * January 7 – Iberia Airlines Flight 602 crashes into a 462-meter peak on the island of Ibiza; 104 are killed. * January 9 – The RMS ''Queen Elizabeth'' is destroyed by fire in Hong Kong harbor. * January 10 – Independence leader Sheikh Mujibur Rahman returns to Bangladesh after spending over nine months in prison in Pakistan. * January 11 – Sheikh Mujibur Rahman declares a new constitutional governme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neil Tyson
Neil is a masculine name of Gaelic and Irish origin. The name is an anglicisation of the Irish ''Niall'' which is of disputed derivation. The Irish name may be derived from words meaning "cloud", "passionate", "victory", "honour" or "champion".. As a surname, Neil is traced back to Niall of the Nine Hostages who was an Irish king and eponymous ancestor of the Uí Néill and MacNeil kindred. Most authorities cite the meaning of Neil in the context of a surname as meaning "champion". Origins The Gaelic name was adopted by the Vikings and taken to Iceland as ''Njáll'' (see Nigel). From Iceland it went via Norway, Denmark, and Normandy to England. The name also entered Northern England and Yorkshire directly from Ireland, and from Norwegian settlers. ''Neal'' or ''Neall'' is the Middle English form of ''Nigel''. As a first name, during the Middle Ages, the Gaelic name of Irish origins was popular in Ireland and later Scotland. During the 20th century ''Neil'' began to be used in Engl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecology (journal)
''Ecology'' is a scientific journal that publishes research and synthesizes papers in the field of ecology. It was founded in 1920 as the continuation of ''Plant World'', and is published by the Ecological Society of America. According to the ''Journal Citation Reports,'' it is currently ranked 15th out of 136 journals in the Ecology Ecology () is the study of the relationships between living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps wi ... category. References External links * Ecology journals English-language journals Publications established in 1920 {{ecology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Island Press
Island Press is a nonprofit, environmental publisher based in Washington, D.C., United States, that specializes in natural history, ecology, conservation, and the built environment. Established in 1984, Island Press generates about half of its revenue through sales and half through donations by organizations and individuals. History Island Press originated in northern California in 1978 as a publisher of books on the human relationship to the natural world. In 1984, the press re-organized to focus exclusively on books for people working on solutions to environmental problems, defined broadly to include the protection of biodiversity, land use planning, environmental issues related to international trade, and other topics. As part of this refocusing, Island Press moved its main office to Washington, D.C., where it remains today. The founders in 1984 were Catherine Conover, Walter Sedgwick, Barbara Dean and Charles Savitt. Savitt stepped down as president on April 30, 2016. David M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jennifer Nuzzo
Jennifer Nuzzo is an American epidemiologist. She is Director of the Center for Pandemic Preparedness and Response and Professor of Epidemiology at the Brown University School of Public Health, having previously taught at the Johns Hopkins Bloomberg School of Public Health. She is also a Senior Fellow for Global Health at the Council on Foreign Relations. Early life and education Nuzzo earned a Bachelor of Science from Rutgers University in 1999. She received a Master of Science from the Harvard T.H. Chan School of Public Health in 2001 and a Doctor of Public Health from the Johns Hopkins Bloomberg School of Public Health in 2014. Career Nuzzo co-lead the development of the Global Health Security Index, an assessment of global health security capabilities in 195 countries, performed by the Nuclear Threat Initiative (NTI) and the Johns Hopkins Center for Health Security together with The Economist Intelligence Unit (EIU). She is the director and principal investigator of the Out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SPIE
SPIE (formerly the Society of Photographic Instrumentation Engineers, later the Society of Photo-Optical Instrumentation Engineers) is an international not-for-profit professional society for optics and photonics technology, founded in 1955. It organizes technical conferences, trade exhibitions, and continuing education programs for researchers and developers in the light-based fields of physics, including: optics, photonics, and imaging engineering. The society publishes peer-reviewed scientific journals, conference proceedings, monographs, tutorial texts, field guides, and reference volumes in print and online. SPIE is especially well-known for Photonics West, one of the laser and photonics industry's largest combined conferences and tradeshows which is held annually in San Francisco. SPIE also participates as partners in leading educational initiatives, and in 2020, for example, provided more than $5.8 million in support of optics education and outreach programs around the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Princeton University
Princeton University is a private university, private research university in Princeton, New Jersey. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial Colleges, fourth-oldest institution of higher education in the United States and one of the nine colonial colleges chartered before the American Revolution. It is one of the highest-ranked universities in the world. The institution moved to Newark, New Jersey, Newark in 1747, and then to the current site nine years later. It officially became a university in 1896 and was subsequently renamed Princeton University. It is a member of the Ivy League. The university is governed by the Trustees of Princeton University and has an endowment of $37.7 billion, the largest List of colleges and universities in the United States by endowment, endowment per student in the United States. Princeton provides undergraduate education, undergraduate and graduate education, graduate in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael E
SS ''Michael E'' was a cargo ship that was built in 1941. She was the first British Catapult Aircraft Merchant ship: a merchant ship fitted with a rocket catapult to launch a single Hawker Hurricane fighter to defend a convoy against long-range German bombers. She was sunk on her maiden voyage by a German submarine. Description ''Michael E'' was built by William Hamilton & Co Ltd, Port Glasgow. Launched in 1941, she was completed in May of that year. She was the United Kingdom's first CAM ship, armed with an aircraft catapult on her bow to launch a Hawker Sea Hurricane. The ship was long between perpendiculars ( overall), with a beam of . She had a depth of and a draught of . She was and . She had six corrugated furnaces feeding two 225 lbf/in2 single-ended boilers with a combined heating surface of . The boilers fed a 443 NHP triple-expansion steam engine that had cylinders of , and diameter by stroke. The engine was built by David Rowan & Co Ltd, Glasgow. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard
Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States and one of the most prestigious and highly ranked universities in the world. The university is composed of ten academic faculties plus Harvard Radcliffe Institute. The Faculty of Arts and Sciences offers study in a wide range of undergraduate and graduate academic disciplines, and other faculties offer only graduate degrees, including professional degrees. Harvard has three main campuses: the Cambridge campus centered on Harvard Yard; an adjoining campus immediately across Charles River in the Allston neighborhood of Boston; and the medical campus in Boston's Longwood Medical Area. Harvard's endowment is valued at $50.9 billion, making it the wealthiest academic institution in the world. Endowment inco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
