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Topic: Advanced Composition Explorer

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	ACE
		The launch of NASA's Advanced Composition Explorer (ACE) aboard a Boeing Delta II rocket is scheduled for Aug. 24.
		The scientific goal of the ACE mission is to measure accurately the composition of several different types of matter, including particles coming from the Sun, the very thin gas between the planets, the even thinner gas just outside the solar system, and matter from distant parts of the galaxy.
		NASA's Advanced Composition Explorer (ACE), to be launched aboard a McDonnell Douglas Delta II rocket in August, arrived today at the Kennedy Space Center (KSC) to begin prelaunch processing.
	www.xs4all.nl /~carlkop/ace.html (3788 words)

	ACE Scientific Goals (Site not responding. Last check: 2007-10-20)
		A major objective is the accurate and comprehensive determination of the elemental and isotopic composition of the various samples of "source material" from which nuclei are accelerated.
		Determine the isotopic composition of the "anomalous cosmic ray" component thought to represent a sample of the very local interstellar medium.
		Solar energetic particles, solar wind, and spectroscopic observations show that the elemental composition of the corona is differentiated from that of the photosphere, although the processes by which this occurs, and by which the solar wind is subsequently accelerated, are poorly understood.
	set.lanl.gov /programs/lasso/ACE/ACEGoals.htm (552 words)

	ACE Mission
		The Advanced Composition Explorer (ACE) is an Explorer mission that was managed by the Office of Space Science Mission and Payload Development Division of the National Aeronautics and Space Administration (NASA).
		The Advanced Composition Explorer (ACE) spacecraft carrying six high-resolution sensors and three monitoring instruments samples low-energy particles of solar origin and high-energy galactic particles with a collecting power 10 to 1000 times greater than past or planned experiments.
		The primary purpose of ACE is to determine and compare the isotopic and elemental composition of several distinct samples of matter, including the solar corona, the interplanetary medium, the local interstellar medium, and Galactic matter.
	www.srl.caltech.edu /ACE/ace_mission.html (1151 words)

	SWEPAM, Space Science Reviews
		These observations provide the context for elemental and isotopic composition measurements made on ACE as well as allowing the direct examination of numerous solar wind phenomena such as coronal mass ejections, interplanetary shocks, and solar wind fine structure, with advanced, 3-D plasma instrumentation.
		The Advanced Composition Explorer (ACE) mission was developed to examine both the isotopic and elemental composition of our galaxy from the four reservoirs of matter that are accessible to a direct measurement from near the Earth.
		However, the ambiguity in interpretation of the isotopic, elemental, and charge-state composition of plasma and energetic particles from the Sun is considerably reduced because these parameters do not change greatly above the coronal base during their transport to 1 AU.
	swepam.lanl.gov /pr.html (13532 words)

	GSFC Space Science Sentinels
		The Advanced Composition Explorer (ACE) spacecraft carries six high resolution sensors and three monitoring instruments to sample low-energy particles of solar origin and high energy galactic particles.
		This small explorer launched in July 1992 is carrying a payload of four particle detectors designed to detect solar energetic particles, precipitating energetic electrons, anomalous cosmic rays and galactic cosmic rays.
		The X-ray Timing Explorer (XTE) was launched on a Delta II rocket December 30, 1995 into a low Earth orbit at an altitude of 362 miles (580 km) and an inclination of 23 degrees.
	www.gsfc.nasa.gov /gsfc/spacesci/sentinel/spacesen.htm (1646 words)

	Misiones Operativas (Site not responding. Last check: 2007-10-20)
		The objective of the Advanced Composition Explorer is to collect observations of particles of solar, interplanetary, interstellar, and galactic origins, spanning the energy range from that of KeV solar wind ions to galactic cosmic ray nuclei up to 600 MeV/nucleon.
		SAMPEX is investigating the composition of local interstellar matter and solar material and the transport of magnetospheric charged particles into the Earth's atmosphere.
		SOHO, a joint venture of the European Space Agency and NASA, is a solar observatory studying the structure, chemical composition, and dynamics of the solar interior; the structure (density, temperature and velocity fields) and dynamics of the outer solar atmosphere; and the solar wind and its relation to the solar atmosphere.
	www.servitel.es /paco/web/nasa/opmsns.htm (1591 words)

	ACE Background Information (Site not responding. Last check: 2007-10-20)
		The Advanced Composition Explorer (ACE) spacecraft carries nine instruments that can collect and measure these particles 10 to 1000 times better than previous spacecraft.
		The prime purpose of ACE is to study the composition of several distinct sources of matter; the Sun and solar system, the local interstellar space, and the galaxy as a whole.
		Learning the differences in composition between the solar wind and the Sun will help answer questions about how the solar corona is formed and how solar wind is accelerated.
	set.lanl.gov /programs/LASSO/ACE/ACEbackgnd.htm (615 words)

	Search: Composition - Info.co.uk
		Read articles about how to improve photographic technique and composition, how to use golden mean, golden section, golden spiral, golden ratio, framing,...
		Composition -- from MathWorld The nesting of two or more functions to form a single new function is known as composition.
		composition of two functions f and g is denoted f\circ g, where f is a function whose...
	dpxml.infospace.com /infocom.uk/results?otmpl=dog/webresults.htm&qkw=Composition&CMP=KNC-3LS480536328&infoad=1 (359 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		The Explorer program is intended to provide these communities with a continuing program of small, low-cost, high-flight-rate, discipline-sustaining missions.
		The Explorer program currently includes the Small Explorers (SMEX), with launches scheduled approximately once per year, and the Delta class Explorers, for which launches had been planned for 1995 (X-ray Timing Explorer-XTE), 1997 (Advanced Composition Explorer-ACE) and 2000 (Far Ultraviolet Spectroscopic Explorer-FUSE).
		Nevertheless, it is acknowledged that the science proposed for FUSE has been ranked among the highest priorities in astrophysics and that many dedicated scientists have devoted years to planning for this mission.
	umbra.nascom.nasa.gov /spd/exp_ltr (333 words)

	[No title]
		Recent Launches --------------- NASA's Advanced Composition Explorer (ACE) was launched on Aug 25.
		The Advanced Composition Explorer is the last Delta-class Explorer space science satellite, and will study the composition of cosmic rays and high energy particles in interplanetary space.
		NASA's Advanced X-ray Astrophysics Facility (AXAF) is scheduled for launch one year from now.
	www.planet4589.org /space/jsr/back/news.332 (677 words)

	Boeing News Release
		Approximately one million miles from Earth, the ACE observatory will conduct its mission to examine the composition of several different types of solar and galactic matter.
		The observatory also will monitor solar-wind and provide advance warning of powerful geomagnetic storms that can disrupt power and communications systems on Earth and present a hazard to astronauts in space.
		The Explorers Project of the Goddard Space Flight Center (GSFC) is managing the ACE mission for NASA.
	www.boeing.com /news/releases/1997/news_release_970821n.html (344 words)

	NASA - Looking for a current NASA Mission?
		RXTE is a satellite that observes the fast-moving, high-energy worlds of fl holes, neutron stars, X-ray pulsars and bursts of X-rays that light up the sky and then disappear forever.
		SAMPEX Studies the energy,composition, and charge states of particles from supernova explosions in the distant reaches of the galaxy, from the heart of solar flares, and from the depths of nearby interstellar space.
		A mission that was designed to study the chemical composition of interstellar gas clouds.
	www.nasa.gov /missions/timeline/current/current_missions.html (1026 words)

	CNN - NASA makes second attempt to launch satellite - August 24, 1997
		The mission of the ACE spacecraft was scrubbed minutes before the end of its launch frame Sunday because of shrimp boats in the area.
		Two shrimp boats were spotted in the waters off the coast of Cape Canaveral on Sunday as the Kennedy Space Center prepared to send up a Boeing Delta II launch vehicle bearing the 1,730-pound Advanced Composition Explorer (ACE) spacecraft.
		Although the U.S. Coast Guard was able to contact one shrimp boat before the end of the launch window, it could not contact the other, which NASA said appeared to be either anchored or dead in the water.
	www.cnn.com /TECH/9708/24/satellite (383 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		However, to avoid confusion and misunderstanding, it is recommended that users consult with the appropriate ACE team members before publishing work derived from the data.
		The ACE spacecraft was launched on August 25, 1997 as part of NASA's Explorer Program.
		It is presently in orbit about the L1 Lagrangian point, ~0.01 AU sunward of the Earth.
	www-ssc.igpp.ucla.edu /~editor/vol06no088_2.txt (73 words)

	SPARC Instrument Sites: Advanced Composition Explorer (ACE) Spacecraft
		The Advanced Composition Explorer (ACE) spacecraft carrying six high-resolution sensors and three monitoring instruments will sample low-energy particles of solar origin and high-energy galactic particles with a collecting power 10 to 1000 times greater than past or planned experiments.
		From a vantage point approximately 1/100 of the distance from the Earth to the Sun ACE will perform measurements over a wide range of energy and nuclear mass, under all solar wind flow conditions and during both large and small particle events including solar flares.
		When reporting space weather ACE can provide an advance warning (about one hour) of geomagnetic storms that can overload power grids, disrupt communications on Earth, and present a hazard to astronauts.
	www.crew.umich.edu /UARC/Outreach/ace.htm (251 words)

	CNN - NASA launches mission to study the sun - August 25, 1997
		An unmanned Delta II rocket lifted NASA's Advanced Composition Explorer (ACE) solar observatory skyward at 10:39 a.m.
		The satellite is to be hurtled to a point 1 million miles from Earth where the gravities of Earth and the sun balance each other.
		The ACE craft is primarily designed to collect several different types of data on matter in outer space, and it will monitor solar winds and solar quiet and active periods.
	www.cnn.com /TECH/9708/25/satellite (407 words)

	ACE Spacecraft Shiffed to Goddard (Site not responding. Last check: 2007-10-20)
		he Advanced Composition Explorer (ACE) was shipped today on an air ride van to the NASA Goddard Space Flight Center (GSFC) in Greenbelt, Md., by The Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md., where it was designed and built.
		With this impressive collecting power, the expansive mass and energy range, and an orbit outside the influence of the Earth's magnetosphere, ACE will be a premier platform for particle studies - much like the Hubble telescope's capabilities for astronomical investigations.
		The ACE mission is sponsored by the Office of Space Science Mission and Payload Development Division at NASA Headquarters, Washington, D.C., with overall project management by the Explorer Project Office at Goddard.
	www.jhuapl.edu /newscenter/pressreleases/1998/ace2.htm (547 words)

	Information Sources
		ACE - The Advanced Composition Explorer is a NASA Space Physics spacecraft mission to determine and compare the elemental and isotopic composition of several distinct samplets of matter.
		The primary mission objectives of the International Cometary Explorer are to determine the composition and physical state of the Giacobinia-Zinner comet's nucleus; to determine the processes that govern the composition and distribution of neutral and ionized species in the cometary atmosphere; and to investigate the interaction between the solar wind and the cometary atmosphere.
		XTE - The X-ray Timing Explorer, a Goddard Mission designed to facilitate the study of time variability in the emission of X-ray sources with moderate spectral resolution.
	www.gsfc.nasa.gov /gsfc/missions/info/info.htm (722 words)

	Boing Boing: Build your own ACE Satellite
		"This Advanced Composition Explorer [ACE] model was designed with the intermediate to advanced builder in mind.
		The Earth sits in a stream of accelerated particles coming in from the Sun, interstellar material, and galactic sources.
		The study of these energetic particles will broaden our understanding of the formation and evolution of the solar system, as well as the astrophysical processes involved.
	www.boingboing.net /2004/11/25/build_your_own_ace_s.html (194 words)

	Bartol ACE/MAG Project Home Page
		The Bartol Research Institute (BRI), in collaboration with the Laboratory for Extraterrestrial Physics (LEP) at the Goddard Space Flight Center (GSFC), has built and delivered a magnetometer instrument.
		This instrument was flown on the Advanced Composition Explorer (ACE), which was launched on a Delta rocket from the Kennedy Space Center on August 25, 1997.
		Planned trajectory for ACE - From Earth to L1 Composite picture from the ACE launch (232K).
	www.bartol.udel.edu /~chuck/ace.html (332 words)

	3
		El Niño events contribute to floods and droughts in the Americas, Africa, and Australia.
		A continuing series of demonstrators containing technologies that are more advanced or alternative to the technologies in X-33 and X-34
		The full range of natural and human-induced changes in Earth's environment, including alterations in climate, land productivity, oceans or other water resources, atmospheric chemistry, and ecological systems, that may alter the capacity of Earth to sustain life.
	www.hq.nasa.gov /office/codez/plans/99nsp/21.html (373 words)

	Astronomy: Satellites and Spacecraft
		SPIDR - Explorer for Spectroscopy and Photometry of the Intergalactic Medium's Diffuse Radiation
		ARISE - Advanced Radio Interferometry between Space and Earth
		ASCA - Advanced Satellite for Cosmology and Astrophysics (formerly Astro-D)
	www.astro.caltech.edu /~pls/astronomy/spacecraft.html (339 words)

	Interpreting Realtime ACE Data From Space (Site not responding. Last check: 2007-10-20)
		In a mathematics (algebra) classroom, the investigation may be used to show a practical application of logarithmic plots.
		In part one of this investigation the learner will become familiar with the Advanced Composition Explorer (ACE) spacecraft and the scientific goals of the ACE mission.
		The learner will become familiar with the Advanced Composition Explorer (ACE) spacecraft and the scientific goals of the ACE mission.
	edmall.gsfc.nasa.gov /inv99Project.Site/Pages/acedata.abstract.html (239 words)

	Astronomical Instruments & Projects, History of Astronomical, Astronomical Instruments & Archive — GKIndia
		Advanced Cosmic-ray Composition Experiment for the Space Station
		Advanced Research and Global Observation Satellite/Extreme Ultraviolet Imaging Photometer
		Advanced Research and Global Observation Satellite/Unconventional Stellar Aspect
	www.gkindia.com /astronomical/index.asp?alpha=C (193 words)

	Dutch Meteor Society: Aurora 11 april 2001
		The fields-of-view are swept across all solar wind directions by the rotation of the spacecraft.
		The Solar Isotope Spectrometer (SIS) is designed to provide high resolution measurements of the isotopic composition of energetic nuclei from He to Ni (Z=2 to 28) over the energy range from ~10 to ~100 MeV/nucleon.
		The Costello Geomagnetic Activity Index model was developed by Kirt Costello at Rice University under support from the US Air Force and Sterling Software, Inc. It is a neural network algorithm that was trained on the response of the Kp geomagnetic activity index to solar wind parameters.
	www.xs4all.nl /~dmsweb/aurora/11april2001/aurora_20010411.html (893 words)

	The Advanced Composition Explorer spacecraft lifts off from Pad 17A, CCAS (Site not responding. Last check: 2007-10-20)
		A Boeing Delta II expendable launch vehicle lifts off with NASA's Advanced Composition Explorer (ACE) observatory at 10:39 a.m.
		ACE has a two-year minimum mission lifetime and a goal of five years of service.
		ACE was built for NASA by the Johns Hopkins Applied Physics Laboratory and is managed by the Explorer Project Office at NASA's Goddard Space Flight Center.
	science.ksc.nasa.gov /gallery/photos/1997/xml/KSC-97PC-1290.xml (197 words)

	Satellite to aid space weather forecasting (Site not responding. Last check: 2007-10-20)
		Real-time data from NASA's Advanced Composition Explorer satellite, launched in August 1997, became part of the daily space weather forecast operations on Jan. 23, 1998, providing forecasters at the National Oceanic and Atmospheric Administration's Space Environment Center with a valuable tool to improve the forecasts and warnings of solar storms.
		The ACE satellite measures the chemical composition of escaping particles from the sun, as well as solar winds' speed, density and magnetic field.
		The data is relayed to Earth by transmitter and used by forecasters to issue alerts.
	www.usatoday.com /weather/solar/wswx198.htm (534 words)

	satellites and space probes
		• ARGOS (Advanced Research and Global Observation Satellite)
		• HALCA (Highly Advanced Laboratory for Communications and Astronomy)
		• SAMPEX (Solar Anomalous and Magnetospheric Particle Explorer)
	www.daviddarling.info /encyclopedia/S/spacecraft_list.html (287 words)

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