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JPL Online Services
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in the City of La Cañada Flintridge, California, United States. Founded in the 1930s by Caltech researchers, JPL is owned by NASA and managed by the nearby California Institute of Technology (Caltech). The laboratory's primary function is the construction and operation of planetary robotic spacecraft, though it also conducts Earth-orbit and astronomy missions. It is also responsible for operating the NASA Deep Space Network. Among the laboratory's major active projects are the Mars 2020 mission, which includes the ''Perseverance'' rover and the '' Ingenuity'' Mars helicopter; the Mars Science Laboratory mission, including the ''Curiosity'' rover; the InSight lander (''Interior Exploration using Seismic Investigations, Geodesy and Heat Transport''); the ''Mars Reconnaissance Orbiter''; the ''Juno'' spacecraft orbiting Jupiter; the ''SMAP'' satellite for earth surface so ...
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Laurie Leshin
Laurie Leshin is an American scientist and academic administrator serving as the 10th Director of the NASA Jet Propulsion Laboratory and as Vice President and Bren Professor of Geochemistry and Planetary Science at California Institute of Technology. Leshin's research has focused on geochemistry and space science. Leshin previously served as the 16th president of Worcester Polytechnic Institute. Education Leshin earned her Bachelor of Science degree in chemistry from Arizona State University and her M.S. (1989) and Ph.D. (1994) in geochemistry from the California Institute of Technology. Career From 1994 to 1996, Leshin was a University of California President's Postdoctoral Fellow in the Department of Earth and Space Sciences at the University of California, Los Angeles (UCLA). From 1996 to 1998, Leshin was the W. W. Rubey Faculty Fellow in the Department of Earth and Space Sciences at UCLA. From 1998 to 2001, Leshin was an assistant professor at Arizona State University (ASU). ...
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Juno (spacecraft)
''Juno'' is a NASA space probe orbiting the planet Jupiter. It was built by Lockheed Martin and is operated by NASA Jet Propulsion Laboratory. The spacecraft was launched from Cape Canaveral Air Force Station on August 5, 2011 UTC, as part of the New Frontiers program. ''Juno'' entered a polar orbit of Jupiter on July 5, 2016, UTC, to begin a scientific investigation of the planet. After completing its mission, ''Juno'' will be intentionally deorbited into Jupiter's atmosphere. ''Juno'' mission is to measure Jupiter's composition, gravitational field, magnetic field, and polar magnetosphere. It will also search for clues about how the planet formed, including whether it has a rocky core, the amount of water present within the deep atmosphere, mass distribution, and its deep winds, which can reach speeds up to . ''Juno'' is the second spacecraft to orbit Jupiter, after the nuclear powered ''Galileo'' orbiter, which orbited from 1995 to 2003. Unlike all earlier spacecr ...
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Arroyo Seco (Los Angeles County)
The Arroyo Seco, meaning "dry stream" in Spanish, is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. , accessed March 16, 2011 seasonal river, canyon, watershed, and cultural area in Los Angeles County, California. The area was explored by Gaspar de Portolà who named the stream Arroyo Seco as this canyon had the least water of any he had seen. During this exploration he met the Chief Hahamog-na (Hahamonga) of the Tongva Indians. Waterway course The watershed begins at Red Box Saddle in the Angeles National Forest near Mount Wilson in the San Gabriel Mountains. As it enters the urbanized area of the watershed, the Arroyo Seco stream flows between La Cañada Flintridge on the west and Altadena on the east. Just below Devil's Gate Dam, the stream passes underneath the Foothill Freeway. At the north end of Brookside Golf Course the stream becomes channelized into a flood control channel and proceeds southward through the golf course. The A ...
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Guggenheim Aeronautical Laboratory
The Guggenheim Aeronautical Laboratory at the California Institute of Technology (GALCIT), was a research institute created in 1926, at first specializing in aeronautics research. In 1930, Hungarian scientist Theodore von Kármán accepted the directorship of the lab and emigrated to the United States. Under his leadership, work on rockets began there in 1936. GALCIT was the first—and from 1936 to 1940 the only—university-based rocket research center. Based on GALCIT's JATO project at the time, the Jet Propulsion Laboratory was established under a contract with the United States Army in November 1943. In 1961 the GALCIT acronym was retained while the name changed to Graduate Aeronautical Laboratories at the California Institute of Technology. In 2006, during the directorship of Ares J. Rosakis, Ares Rosakis, GALCIT was once again renamed, taking on the new name Graduate Aerospace Laboratories of the California Institute of Technology (while continuing to maintain the acronym ...
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National Historic Landmark
A National Historic Landmark (NHL) is a building, district, object, site, or structure that is officially recognized by the United States government for its outstanding historical significance. Only some 2,500 (~3%) of over 90,000 places listed on the country's National Register of Historic Places are recognized as National Historic Landmarks. A National Historic Landmark District may include contributing properties that are buildings, structures, sites or objects, and it may include non-contributing properties. Contributing properties may or may not also be separately listed. Creation of the program Prior to 1935, efforts to preserve cultural heritage of national importance were made by piecemeal efforts of the United States Congress. In 1935, Congress passed the Historic Sites Act, which authorized the Interior Secretary authority to formally record and organize historic properties, and to designate properties as having "national historical significance", and gave the Nation ...
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Twenty-Five-Foot Space Simulator
The Twenty-Five-Foot Space Simulator is a chamber for testing spacecraft in space-like conditions, including extreme cold, high radiation, and near-vacuum pressure. Built in 1961, it is located at the Jet Propulsion Laboratory in Pasadena, California. It has been used to prepare many American space probes for their launches, including the Ranger, Surveyor, Mariner, and Voyager spacecraft. The first facility of its type, the chamber served as an example for other countries seeking to establish space programs. and   It was declared a National Historic Landmark in 1985 and is on the National Register of Historic Places. Description The Twenty-Five-Foot Space Simulator is a stainless-steel cylinder in height and in diameter. A doorway wide and high provides access for bringing test objects and equipment into the chamber; a personnel access door is built into the larger doorway. Its walls and floor are lined with cooling shrouds that help provide a controllable temperature ...
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Space Flight Operations Facility
The Space Flight Operations Facility (SFOF) is a building containing a control room and related computing and communications equipment areas at the Jet Propulsion Laboratory in Pasadena, California. NASA's Deep Space Network is operated from this facility. The SFOF has monitored and controlled all interplanetary and deep space exploration for NASA and other international space agencies since 1963. The facility also acted as a backup communications facility for Apollo missions. It was declared a National Historic Landmark in 1985 and is on the National Register of Historic Places. and   Public tours are available with advance planning. History In the early years, the operations control center of the Deep Space Network did not have a permanent facility. It was a makeshift setup with numerous desks and phones installed in a large room near the computers used to calculate orbits. In July 1961, NASA started the construction of the permanent facility, Space Flight Operations Fac ...
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Small Solar System Body
A small Solar System body (SSSB) is an object in the Solar System that is neither a planet, a dwarf planet, nor a natural satellite. The term was first defined in 2006 by the International Astronomical Union (IAU) as follows: "All other objects, except satellites, orbiting the Sun shall be referred to collectively as 'Small Solar System Bodies' ".''RESOLUTION B5 - Definition of a Planet in the Solar System''
(IAU) This encompasses all s and all s other than those that are

JPL Small-Body Database
The JPL Small-Body Database (SBDB) is an astronomy database about small Solar System bodies. It is maintained by Jet Propulsion Laboratory (JPL) and NASA and provides data for all known asteroids and several comets, including orbital parameters and diagrams, physical diagrams, close approach details, radar astrometry, discovery circumstances, alternate designations and lists of publications related to the small body. The database is updated daily when new observations are available. In April 2021 the JPL Small-Body Database Browser started using planetary ephemeris ( DE441) and small-body perturber SB441-N16. Most objects such as asteroids get a two-body solution (Sun+object) recomputed twice a year. Comets generally have their two-body orbits computed at a time near the perihelion passage (closest approach to the Sun) as to have the two-body orbit more reasonably accurate for both before and after perihelion. For most asteroids, the epoch used to define an orbit is updated twice a ...
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Psyche (spacecraft)
''Psyche'' is a planned orbiter mission to explore the origin of planetary cores by studying the metallic asteroid of the same name. Lindy Elkins-Tanton of Arizona State University is the principal investigator who proposed this mission for NASA's Discovery Program. NASA's Jet Propulsion Laboratory (JPL) will manage the project. 16 Psyche is the heaviest known M-type asteroid, and was once thought to be the exposed iron core of a protoplanet, the remnant of a violent collision with another object that stripped off its mantle and crust. Numerous recent studies have all but ruled that out. Radar observations of the asteroid from Earth indicate an iron–nickel composition. On January 4, 2017, the ''Psyche'' mission was selected for NASA's Discovery #14 mission, and launch was scheduled for no earlier than September 20, 2022. On June 24, 2022, the Psyche launch was postponed until at least 2023. As of October 2022, Psyche is scheduled to launch no earlier than October 10 ...
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X-ray Telescope
An X-ray telescope (XRT) is a telescope that is designed to observe remote objects in the X-ray spectrum. In order to get above the Earth's atmosphere, which is opaque to X-rays, X-ray telescopes must be mounted on high altitude rockets, balloons or artificial satellites. The basic elements of the telescope are the optics (focusing or collimating), that collects the radiation entering the telescope, and the detector, on which the radiation is collected and measured. A variety of different designs and technologies have been used for these elements. Many of the existing telescopes on satellites are compounded of multiple copies or variations of a detector-telescope system, whose capabilities add or complement each other and additional fixed or removable elements (filters, spectrometers) that add functionalities to the instrument. Optics The most common methods used in X-ray optics are grazing incidence mirrors and collimated apertures. Focusing mirrors The utilization of X-r ...
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