Fermi - The newly discovered eROSITA X-ray bubbles in the Milky Way’s centre, together with the Fermi bubbles and microwave haze, may be explained by a single episode of central supermassive-black-hole ...

 
Fermi gas. A Fermi gas is an idealized model, an ensemble of many non-interacting fermions. Fermions are particles that obey Fermi–Dirac statistics, like electrons, protons, and neutrons, and, in general, particles with half-integer spin. These statistics determine the energy distribution of fermions in a Fermi gas in thermal equilibrium, and ... . Elle lee

The Fermi Gamma-ray Space Telescope, formerly GLAST, is opening this high-energy world to exploration and helping us answer these questions. With Fermi, astronomers at long last have a superior tool to study how black holes, notorious for pulling matter in, can accelerate jets of gas outward at fantastic speeds.Fermi hay fecmi là một nguyên tố kim loại tổng hợp thuộc nhóm actini có tính phóng xạ cao, có ký hiệu Fm và số nguyên tử là 100. Fermi được tạo ra bằng cách bắn phá hạt nhân plutoni bởi các neutron , và là nguyên tố siêu urani thứ 8. Campus access – Users and Badging Office START HERE. Report concerns or violations. Inside Fermilab (intranet) Visa Office. Users Executive Committee. Use Fermilab's scientific facilities. Fermilab Student and Postdoc Association. Fellowships and Ph.D. Programs. U.S. Particle Accelerator School.Enrico Fermi ( Italian: [enˈriːko ˈfermi]; 29 September 1901 – 28 November 1954) was an Italian and later naturalized American physicist, renowned for being the creator of the world's first nuclear reactor, the Chicago Pile-1, and a member of the Manhattan Project. He has been called the "architect of the nuclear age " [1] and the ... The fermi is a unit of measurement of length. A fermi is equivalent to a femtometer, and is the older non–SI measurement unit of length, in honour of Italian physicist Enrico Fermi (29 September 1901 — 28 November 1954), since it is a typical length-scale of, and often referenced in nuclear physics. Femtometer is a derived metric ... Fermi Problems. Fermi problems, named after physicist Enrico Fermi, are open-ended problems where students have to make assumptions, estimates, and educated guesses to creatively solve a problem. These complicated problem-solving exercises help students gain confidence in thinking like an engineer or scientist. Nov 1, 2011 · Large Area Telescope (LAT) The primary interaction of photons in the Fermi energy range with matter is pair conversion. This process forms the basis for the underlying measurement principle by providing a unique signature for gamma rays, which distinguishes them from charged cosmic rays whose flux is as much as 10 5 times larger, and allowing a determination of the incident photon directions ... Fermi Problems. Fermi problems, named after physicist Enrico Fermi, are open-ended problems where students have to make assumptions, estimates, and educated guesses to creatively solve a problem. These complicated problem-solving exercises help students gain confidence in thinking like an engineer or scientist.Jan 1, 2007 · Fermi Research Alliance, LLC manages and operates the Fermi National Accelerator Laboratory pursuant to Contract number DE-AC02-07CH11359 with the United States Department of Energy. The Period of Performance is January 1, 2007 through December 31, 2024. Current Conformed Prime Contract. Original Prime Contract. Substantive Contract Modifications. Fermi, who won the Nobel Prize in 1938, also worked in quantum mechanics and particle physics, making him an ideal candidate for an elementary name. The element was almost named centurium, however. In 1953, scientists at the Nobel Institute in Stockholm had produced fermium 250 by bombarding uranium with oxygen nuclei.The newly discovered eROSITA X-ray bubbles in the Milky Way’s centre, together with the Fermi bubbles and microwave haze, may be explained by a single episode of central supermassive-black-hole ...However, in July 1968, DTE Energy announced plans to build a second nuclear reactor. This one would be a General Electric boiling water reactor. Fermi II had the odds stacked against it, while it didn't have the same issues that Fermi I did. Citizen activists still had a bad taste in their mouths and were quick to turn against Fermi II as well.The Fermi Science Support Center (FSSC) runs the guest investigator program, creates and maintains the mission time line, provides analysis tools for the scientific community, and archives and serves the Fermi data. This web site is the portal to Fermi for all guest investigators. This view shows the entire sky at energies greater than 1 GeV ...Fermi energy is a concept in quantum mechanics that usually refers to the energy difference between the highest and lowest occupied single-particle states in a quantum system of non-interacting fermions at absolute zero temperature. The value of the Fermi level at absolute zero temperature (−273.15 °C) is known as the Fermi energy.Muon g-2 doubles down with latest measurement, explores uncharted territory in search of new physics. Scientists working on Fermilab’s Muon g-2 experiment released the world’s most precise measurement yet of the magnetic moment of the muon, bringing particle physics closer to the ultimate showdown between theory and experiment that may ...Construction deep underground. LBNF provides the enormous caverns and cryogenics infrastructure for the DUNE detector deep underground at Sanford Lab. This includes the excavation of 800,000 tons of rock. It will also build structures at Fermilab to send neutrinos through stone and earth to South Dakota — no tunnel needed.Proposals for the Fermi Guest Investigator program are usually due mid-January each year. The program funds many different areas of science — data analysis, theory development, multi-wavelength studies, etc. — as long as they can be shown to reasonably relate to the Fermi mission's science goals. General information about the GI programThe Fermi surface is the surface in the reciprocal space (the dual of the real space you live in) delimitating the fermionic occupied states from the fermionic unoccupied ones at zero temperature. So it is a momentum ( k k) construction rather than an energy construction. Fermi’s discovery of slow neutrons would help pave the way for future developments in atomic physics. In 1938, Fermi was awarded the Nobel Prize “for his demonstrations of the existence of new radioactive elements produced by neutron irradiation, and for his related discovery of nuclear reactions brought about by slow neutrons.”.The source designation is the same as 4FGL, 4FGL JHHMM.m+DDMM(c,e,i,s) where the 4 refers to the fourth catalog (1FGL was released at 1 year, 2FGL at 2 years, and 3FGL at 4 years) and FGL represents Fermi Gamma-ray LAT. In 4FGL-DR2, the "DataRelease" column set to either 1 or 2 allows telling new sources from original 4FGL sources. Construction deep underground. LBNF provides the enormous caverns and cryogenics infrastructure for the DUNE detector deep underground at Sanford Lab. This includes the excavation of 800,000 tons of rock. It will also build structures at Fermilab to send neutrinos through stone and earth to South Dakota — no tunnel needed.The Fermi surface is the surface in the reciprocal space (the dual of the real space you live in) delimitating the fermionic occupied states from the fermionic unoccupied ones at zero temperature. So it is a momentum ( k k) construction rather than an energy construction. However, in July 1968, DTE Energy announced plans to build a second nuclear reactor. This one would be a General Electric boiling water reactor. Fermi II had the odds stacked against it, while it didn't have the same issues that Fermi I did. Citizen activists still had a bad taste in their mouths and were quick to turn against Fermi II as well. The Fermi paradox is a conflict between the argument that scale and probability seem to favor intelligent life being common in the universe, and the total lack of evidence of intelligent life having ever arisen anywhere other than on Earth.The Fermi energy of a (n-doped) semiconductor is typically rather close to the band edge. In fact, by controlling the doping, it can be made it as close to the band edge as we want. On the other hand, in metal, where the conduction band is partially filled with electrons, the Fermi energy is necessarily quite big.Experimental confirmation of a prediction is merely a measurement. An experiment disproving a prediction is a discovery. Enrico Fermi. Science, Discovery, Engineering. 84 Copy quote. It is not good to try to stop knowledge from going forward. Ignorance is never better than knowledge. Enrico Fermi. Positive, Ignorance, Science. the Fermi surface, and should be regarded as yielding only qual-itative results. 2.2.2 T6= 0 , Fermi StatisticsThe source designation is the same as 4FGL, 4FGL JHHMM.m+DDMM(c,e,i,s) where the 4 refers to the fourth catalog (1FGL was released at 1 year, 2FGL at 2 years, and 3FGL at 4 years) and FGL represents Fermi Gamma-ray LAT. In 4FGL-DR2, the "DataRelease" column set to either 1 or 2 allows telling new sources from original 4FGL sources. Campus access – Users and Badging Office START HERE. Report concerns or violations. Inside Fermilab (intranet) Visa Office. Users Executive Committee. Use Fermilab's scientific facilities. Fermilab Student and Postdoc Association. Fellowships and Ph.D. Programs. U.S. Particle Accelerator School.Sep 22, 2020 · Fermilab's 6,800-acre site is located in Batavia, Illinois, and is managed by the Fermi Research Alliance LLC for the U.S. Department of Energy Office of Science. FRA is a partnership of the University of Chicago and Universities Research Association Inc., a consortium of 89 research universities. Enrico Fermi, (born Sept. 29, 1901, Rome, Italy—died Nov. 28, 1954, Chicago, Illinois, U.S.), Italian-born American scientist who was one of the chief architects of the nuclear age. He developed the mathematical statistics required to clarify a large class of subatomic phenomena, explored nuclear transformations caused by neutrons, and ...IFermi is a Python (3.6+) library and set of command-line tools for the generation, analysis, and visualisation of Fermi surfaces and Fermi slices. The goal of the library is to provide fully featured FermiSurface and FermiSlice objects that allow for easy manipulation and analysis. The main features include:The following data products are created daily by the GIOC and sent to the FSSC, regardless of whether a gamma-ray burst has been detected. These data products will be produced within 24 hours after the GIOC receives the last input data. On 26 November 2012, the GBM flight software was updated to allow operation in a new data-taking mode.The Fermi Bubbles are two enormous orbs of gas and cosmic rays that tower over the Milky Way, covering a region roughly as large as the galaxy itself. These giant space bubbles may be fueled by a ...Enrico Fermi’s and Leo Szilard’s skills were complementary, but their personalities clashed. They collaborated on their last joint experiment in May 1939, only five months after the discovery of nuclear fission and more than three years before the start-up of Chicago Pile-1 on December 2, 1942. Sep 22, 2020 · Fermilab's 6,800-acre site is located in Batavia, Illinois, and is managed by the Fermi Research Alliance LLC for the U.S. Department of Energy Office of Science. FRA is a partnership of the University of Chicago and Universities Research Association Inc., a consortium of 89 research universities. Sep 9, 2021 · The Fermi paradox ponders why Earth has not been visited by aliens, while the Drake equation tries to estimate the number of intelligent civilizations in our galaxy. Both concepts involve a lot of uncertainty, because when it comes to extraterrestrial life, there’s a lot we don’t know. “These two tools are foundational in the sense that ... Aug 14, 2023 · An excellent collection of Fermi problems for your class. By [email protected] August 14, 2023. Enrico Fermi is the father of “solving maths problems we will never know the exact answer to.”. Such as how many leaves are on all the trees in Central Park. They are great for getting students to think mathematically and use ... This is a Federal computer (and/or it is directly connected to a Fermilab local network system) that is the property of the United States Government. It is for authorized use only. Users (authorized or unauthorized) have no explicit or implicit expectation of privacy.Sep 3, 2023 · A Fermi estimate is one done using back-of-the-envelope calculations and rough generalizations to estimate values which would require extensive analysis or experimentation to determine exactly. Physics is celebrated for its ability to make extremely accurate predictions about tough problems such as the magnetic moment of electrons, the deflection of light by the Sun's gravity, or the ... Feb 13, 2023 · Prior to the launch of Fermi, the GBM team developed a GUI-based spectral analysis software tool in IDL, called RMfit, specializing in the analysis of GBM trigger data. More than 10 years later, an open source, multi-wavelength approach is desirable, integrating with the long-standing community standard fitting engine, XSPEC. Experimental confirmation of a prediction is merely a measurement. An experiment disproving a prediction is a discovery. Enrico Fermi. Science, Discovery, Engineering. 84 Copy quote. It is not good to try to stop knowledge from going forward. Ignorance is never better than knowledge. Enrico Fermi. Positive, Ignorance, Science. Oct 4, 2018 · Preparing these data for analysis depends on the type of analysis you wish to perform (e.g. point source, extended source, GRB spectral analysis, timing analysis, etc). The different cuts to the data are described in detail in the Cicerone . Data preparation consists of two steps. ( gtselect ): Used to make cuts based on columns in the event ... The Fermi Gamma-ray Space Telescope. Click on the images or topic name for information about these science topics.An Overview of the Fermi ArchitectureAn Overview of the Fermi Architecturethe Fermi Architecture The first Fermi based GPU, implemented with 3.0 billion transistors, features up to 512 CUDA cores. A CUDA core executes a floating point or integer instruction per clock for a thread. The 512 CUDA cores are organized in 16 SMs of 32 cores each. The Fermi data released to the scientific community is governed by the data policy. The released instrument data for the GBM, along with LAT source lists, can be accessed through the Browse interface specific to Fermi. LAT photon data can be accessed through the LAT data server . The FITS files can also be downloaded from the Fermi FTP site.Fermi, Unit 2. Location: 25 MI NE of Toledo, OH, in Region III Operator: DTE Electric Company Operating License: Issued - 07/15/1985, Expires - 03/20/2045Dec 5, 2021 · Fermi died four years later, in 1954, so did not have long to ponder the question. But his idea has sparked whole fields of science hoping to solve the problem, including the search for ... The Fermi Level is defined at every temperature, not only at absolute zero temperature. 3. Fermi Energy is the kinetic energy difference between the lowest and highest occupied single-electron states. The Fermi Level corresponds to the total kinetic energy and potential energy of the thermodynamic system. 4.Preparing these data for analysis depends on the type of analysis you wish to perform (e.g. point source, extended source, GRB spectral analysis, timing analysis, etc). The different cuts to the data are described in detail in the Cicerone . Data preparation consists of two steps. ( gtselect ): Used to make cuts based on columns in the event ...Campus access – Users and Badging Office START HERE. Report concerns or violations. Inside Fermilab (intranet) Visa Office. Users Executive Committee. Use Fermilab's scientific facilities. Fermilab Student and Postdoc Association. Fellowships and Ph.D. Programs. U.S. Particle Accelerator School.Fermi Research Alliance, LLC manages and operates the Fermi National Accelerator Laboratory pursuant to Contract number DE-AC02-07CH11359 with the United States Department of Energy. The Period of Performance is January 1, 2007 through December 31, 2024. Current Conformed Prime Contract. Original Prime Contract. Substantive Contract Modifications.Apr 28, 2022 · I teach IB physics and recently attempted explain to a student where the Fermi Radius formula comes from in response to a question. For those unaware the fermi radius formula is shown below. R =R0A1/3 R = R 0 A 1 / 3. Where R0 R 0 is the Fermi Radius (1.20 fm), R R is the nuclear radius of an arbitrary nucleus, and A A is the mass number of the ... Enrico Fermi, (born Sept. 29, 1901, Rome, Italy—died Nov. 28, 1954, Chicago, Illinois, U.S.), Italian-born American scientist who was one of the chief architects of the nuclear age. He developed the mathematical statistics required to clarify a large class of subatomic phenomena, explored nuclear transformations caused by neutrons, and ... the Fermi surface, and should be regarded as yielding only qual-itative results. 2.2.2 T6= 0 , Fermi Statistics From Sci-News.com, March 19, 2021: Physicists from the TOTEM (TOTal cross section, Elastic scattering and diffraction dissociation Measurement) Collaboration at CERN's Large Hadron Collider (LHC) and the DØ Collaboration at Fermilab have found strong new evidence for the odderon, an elusive three-gluon state predicted almost five decades ago. (1901-1954) Who Was Enrico Fermi? Enrico Fermi's early research was in general relativity and quantum mechanics, but he soon focused on the newer field of nuclear physics. He won the Nobel...The Fermi Gamma-ray Space Telescope ( FGST, [3] also FGRST ), formerly called the Gamma-ray Large Area Space Telescope ( GLAST ), is a space observatory being used to perform gamma-ray astronomy observations from low Earth orbit. Its main instrument is the Large Area Telescope (LAT), with which astronomers mostly intend to perform an all-sky ...Option 1: Select the report type. lists only active courses and qualifications with due dates. is similar to the ITP, however it lists the most current training dates for all courses and qualifications taken, regardless of the active status and due dates. is a complete report of all training taken and qualifications completed. Nov 15, 2022 · The Fermi mission provides a suite of tools called the Fermitools for the analysis of both LAT and GBM data. This suite was developed by the FSSC and the instrument teams. Originally called the ScienceTools, the suite was renamed when the software hosting and distribution were changed to use Github and Conda. The following data products are created daily by the GIOC and sent to the FSSC, regardless of whether a gamma-ray burst has been detected. These data products will be produced within 24 hours after the GIOC receives the last input data. On 26 November 2012, the GBM flight software was updated to allow operation in a new data-taking mode.The following data products are created daily by the GIOC and sent to the FSSC, regardless of whether a gamma-ray burst has been detected. These data products will be produced within 24 hours after the GIOC receives the last input data. On 26 November 2012, the GBM flight software was updated to allow operation in a new data-taking mode.The Enrico Fermi Nuclear Generating Station is a nuclear power plant on the shore of Lake Erie near Monroe, in Frenchtown Charter Township, Michigan on approximately 1,000 acres (400 ha). All units of the plant are operated by the DTE Energy Electric Company and owned (100 percent) by parent company DTE Energy.Aug 24, 2023 · The Fermi Paradox seeks to answer the question of where the aliens are. Given that our solar system is quite young compared to the rest of the universe — roughly 4.5 billion years old, compared ... The Fermi Bubbles are two enormous orbs of gas and cosmic rays that tower over the Milky Way, covering a region roughly as large as the galaxy itself. These giant space bubbles may be fueled by a ...For example, the speed of light is 299,792,458 m/s. We can quickly express this as 3×108. This is the key concept behind Fermi problems. Instead of being exact, we round numbers to their closest magnitude, or power of 10, and estimate the answer using that. They next go over one of the most classic Fermi problems. Proposals for the Fermi Guest Investigator program are usually due mid-January each year. The program funds many different areas of science — data analysis, theory development, multi-wavelength studies, etc. — as long as they can be shown to reasonably relate to the Fermi mission's science goals. General information about the GI programTracy Marc, Fermilab, [email protected], 224-290-7803. The U.S. Department of Energy has formally approved the start of full construction for the PIP-II project, an essential upgrade to the accelerator complex at Fermi National Accelerator Laboratory. The heart of the project is a powerful new superconducting linear accelerator that will enable ...The newly discovered eROSITA X-ray bubbles in the Milky Way’s centre, together with the Fermi bubbles and microwave haze, may be explained by a single episode of central supermassive-black-hole ...The fermi is the unit of length used to measure small distances in nuclear physics. The unit fermi is also known as a femtometer. 1 fermi = 10 -15 m. Hence, 1 fermi equal to 10 -15 meter. Suggest Corrections.The Fermi Gamma-ray Burst Monitor data for GRB 221009A has two periods of bad time intervals, affecting all data types. At particularly high rates the TTE data has loss due to the bandwidth limit between the instrument and the spacecraft. CTIME and CSPEC data experience deadtime but do not experience similar losses due to electronics bandwidth.The following data products are created daily by the GIOC and sent to the FSSC, regardless of whether a gamma-ray burst has been detected. These data products will be produced within 24 hours after the GIOC receives the last input data. On 26 November 2012, the GBM flight software was updated to allow operation in a new data-taking mode.Enrico Fermi Biographical . E nrico Fermi was born in Rome on 29th September, 1901, the son of Alberto Fermi, a Chief Inspector of the Ministry of Communications, and Ida de Gattis. He attended a local grammar school, and his early aptitude for mathematics and physics was recognized and encouraged by his father’s colleagues, among them A. Amidei. (1901-1954) Who Was Enrico Fermi? Enrico Fermi's early research was in general relativity and quantum mechanics, but he soon focused on the newer field of nuclear physics. He won the Nobel...Feb 10, 2016 · The Fermi Gamma-ray Space Telescope. Click on the images or topic name for information about these science topics. Feb 13, 2023 · Prior to the launch of Fermi, the GBM team developed a GUI-based spectral analysis software tool in IDL, called RMfit, specializing in the analysis of GBM trigger data. More than 10 years later, an open source, multi-wavelength approach is desirable, integrating with the long-standing community standard fitting engine, XSPEC. IFermi is a Python (3.6+) library and set of command-line tools for the generation, analysis, and visualisation of Fermi surfaces and Fermi slices. The goal of the library is to provide fully featured FermiSurface and FermiSlice objects that allow for easy manipulation and analysis. The main features include:Enrico Fermi in 1949, to explain heating of particles in cosmic rays. Fermi studied charged particles being reflected by the mov-ing interstellar magnetic field and either gaining or losing energy, depending on whether the ”magnetic mirror” is approaching or re-ceding. In a typical environment, Fermi argued, the probability ofThe FSSC has created a Docker container pre-loaded with many of the necessary tools required to do Fermi Analysis. It includes the Fermi Science Tools, the HEASARC FTOOLS, Python 2.7 and associated libraries along with a host of other programs. This container will run on Windows, MacOS, and Linux. You can find it (with instructions) on github ...Topics cover much of the gamma-ray band ranging from keV-MeV transients seen with Fermi's GBM to the highest energies observed by the LAT and the very high energies observed by ground-based gamma-ray telescopes. This year's school will be held at the University of Delaware Conference Center in Lewes, Delaware, from May 31 to June 10, 2022 ...May 15, 2020 · A pair of gigantic gamma-ray bubbles centered on the core of the Milky Way galaxy were discovered by the Fermi Gamma-ray Space Telescope 10 years ago. But how these so-called "Fermi bubbles" arose ... The Fermi energy of a (n-doped) semiconductor is typically rather close to the band edge. In fact, by controlling the doping, it can be made it as close to the band edge as we want. On the other hand, in metal, where the conduction band is partially filled with electrons, the Fermi energy is necessarily quite big.Feb 10, 2016 · Fermi Overview. The Fermi Gamma-ray Space Telescope is an international and multi-agency space mission that studies the cosmos in the energy range 10 keV - 300 GeV. Several successful exploratory missions in gamma-ray astronomy led to the Energetic Gamma Ray Experiment Telescope (EGRET) instrument on the Compton Gamma Ray Observatory (CGRO).

The young Enrico Fermi. Enrico Fermi was born on 29 September 1901 in Rome to a family with no scientific traditions. His passion for natural sciences, and in particular for physics, was stimulated and guided in his school years by an engineer and family friend, Adolph Amidei, who recognized Fermi’s exceptional intellectual abilities and suggested admission to Pisa’s Scuola Normale Superiore.. Phone number to lowe

fermi

The goal is to get a sense of approximate size. This type of problem is known as a Fermi Problem, named for physicist Enrico Fermi. Enrico Fermi was known for his contribution to the Manhattan Project during World War II. He was a professor and research scientist at Columbia University and the University of Chicago.The Fermi paradox is a conflict between the argument that scale and probability seem to favor intelligent life being common in the universe, and the total lack of evidence of intelligent life having ever arisen anywhere other than on Earth.Experimental confirmation of a prediction is merely a measurement. An experiment disproving a prediction is a discovery. Enrico Fermi. Science, Discovery, Engineering. 84 Copy quote. It is not good to try to stop knowledge from going forward. Ignorance is never better than knowledge. Enrico Fermi. Positive, Ignorance, Science. The Enrico Fermi Presidential Award was subsequently established in 1956 as a memorial to the legacy of this Italian-born naturalized American citizen and 1938 Nobel Laureate in physics, who achieved the first nuclear chain reaction. Highly accomplished in both theory and experiment, Enrico Fermi is widely regarded as one of the leading ...The Fermi Gamma-ray Space Telescope, formerly GLAST, is opening this high-energy world to exploration and helping us answer these questions. With Fermi, astronomers at long last have a superior tool to study how black holes, notorious for pulling matter in, can accelerate jets of gas outward at fantastic speeds.The Fermi Science Support Center (FSSC) runs the guest investigator program, creates and maintains the mission time line, provides analysis tools for the scientific community, and archives and serves the Fermi data. This web site is the portal to Fermi for all guest investigators. This view shows the entire sky at energies greater than 1 GeV ...This is a Federal computer (and/or it is directly connected to a Fermilab local network system) that is the property of the United States Government. It is for authorized use only. Users (authorized or unauthorized) have no explicit or implicit expectation of privacy.The Fermi Gamma-ray Space Telescope ( FGST, [3] also FGRST ), formerly called the Gamma-ray Large Area Space Telescope ( GLAST ), is a space observatory being used to perform gamma-ray astronomy observations from low Earth orbit. Its main instrument is the Large Area Telescope (LAT), with which astronomers mostly intend to perform an all-sky ...Nov 22, 2022 · The Fermi Gamma-ray Burst Monitor data for GRB 221009A has two periods of bad time intervals, affecting all data types. At particularly high rates the TTE data has loss due to the bandwidth limit between the instrument and the spacecraft. CTIME and CSPEC data experience deadtime but do not experience similar losses due to electronics bandwidth. NASA.gov brings you the latest images, videos and news from America's space agency. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind..

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