Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Planetary


Related Topics

  
  Planetary Nebulae
On November 13, 1790, Herschel found the planetary nebula NGC 1514 (his H IV.69), which has a very bright central star; thus he became convinced that the planetary nebulae were nebulous material (gas or dust) associated with a central star, and not unresolved clusters as he and others had thought previously.
Planetary nebulae have also been discovered in other galaxies with large telescopes, including the Large and the Small Magellanic Cloud, the Andromeda Galaxy M31, M33, M32, and NGC 6822 as well as other galaxies in the Local Group and beyond.
Planetary Nebulae in the Globular Cluster PAL 6 and NGC 6441.
www.seds.org /messier/planetar.html   (1296 words)

  
  Planetary nebula - Wikipedia, the free encyclopedia
A planetary nebula is an astronomical object consisting of a glowing shell of gas and plasma formed by certain types of stars at the end of their lives.
Planetary nebulae are important objects in astronomy because they play a crucial role in the chemical evolution of the galaxy, returning material to the interstellar medium which has been enriched in heavy elements and other products of nucleosynthesis (such as carbon, nitrogen, oxygen and calcium).
Planetary nebulae are generally faint objects, and none are visible to the naked eye.
en.wikipedia.org /wiki/Planetary_nebula   (2478 words)

  
 Planetary ring - Wikipedia, the free encyclopedia
A planetary ring is a ring of dust and other small particles orbiting around a planet in a flat disc-shaped region.
The most spectacular and famous planetary rings are those around Saturn, but all four of the solar system's gas giant planets (Jupiter, Saturn, Uranus, Neptune) possess ring systems of their own.
The origin of planetary rings is not precisely known, but they are thought to be unstable and dissipate over the course of tens or hundreds of millions of years.
en.wikipedia.org /wiki/Planetary_ring   (394 words)

  
 Review | Planetary: All Over the World and Other Stories by Warren Ellis and John Cassaday   (Site not responding. Last check: 2007-11-02)
Planetary is the name of a group of archeologists of the impossible (sometimes also dubbed "mystery archeologists") who investigate and uncover the hidden history of the 20th century.
Planetary is also the name of the series of comics that reports on their progress.
Planetary is a private group that claims to want to bring the world's strange beauty to light (Elijah Snow: "It's a strange world." Jakita Wagner: "Let's keep it that way.").
www.januarymagazine.com /SFF/planetary.html   (979 words)

  
 Planetary Science Encyclopedia Article, Definition, History, Biography   (Site not responding. Last check: 2007-11-02)
Planetary science, also known as planetology or planetary astronomy, is the science of planets and the solar system, and incorporates an interdisciplinary approach drawing from diverse sciences.
Planetary science may be considered a part of the Earth sciences, or more logically, as its parent field.
Planetary science studies objects ranging in size from micrometeoroids to gas giants, their composition, dynamics and history.
www.artisticnudity.com /encyclopedia/Planetary_science   (313 words)

  
 Physics Today April 2004: Planetary Diversity
Planetary scientists study what is in orbit around stars but not doing what a star does (or used to do in an earlier life), which is fusion.
Planetary science is not a scientific discipline in the usual sense of being a specialty field; it is rather an interdisciplinary combination of many areas of science.
Planetary science is evolving into a field with rich interplay between the traditional area of geoscientific approaches applied to planets and the new areas of extrasolar planets and exobiology.
www.physicstoday.org /vol-57/iss-4/p43.html   (4025 words)

  
 CHAPTER 5: PLANETARY GEOLOGY: Manual of Remote Sensing
Planetary geology is the study of surface and interior processes on solid objects in the solar system: planets, satellites, asteroids, comets, and rings.
Planetary geology includes an assessment of the past state of the solar system, for example as preserved in the ancient, scarred surfaces of objects like the Moon and asteroids, or in the enigmatic polar layered deposits on Mars.
Geologic histories of planetary surfaces are often documented in the form of geologic maps (compiled at various scales dependent on the available data and detail to be illustrated) which portray the three-dimensional surface units that comprise a planetary surface and indicate their relative stratigraphic positions.
marswatch.tn.cornell.edu /rsm.html   (18132 words)

  
 Planetary Protection at NASA
NASA requires that planetary protection procedures involving sterile items and sample processing must be conducted in Class 100 clean rooms, as defined by federal standard (equivalent to ISO Class 5).
Planetary protection procedures specify the types of devices that may be used for air sampling in these environments.
Planetary protection plans may call for the use of active or passive microbial barriers to protect against the recontamination of spacecraft after microbial reduction processing.
planetaryprotection.nasa.gov /pp/methods   (1618 words)

  
 First Detection Of Magnetic Fields In The Central Stars Of Four Planetary Nebulae
Planetary nebulae are expanding gas shells that remain after Sun-like stars eject their outer layers at the end of their lifetimes.
Planetary nebulae are expanding gas shells that are ejected by Sun-like stars at the end of their lifetimes.
Four central stars of planetary nebulae were observed by the team and magnetic fields were found in all of them.
www.sciencedaily.com /releases/2005/01/050111111641.htm   (1342 words)

  
 Planetary Hours & Days Main Page   (Site not responding. Last check: 2007-11-02)
However, the planetary hours are not the same as the sixty minute hours beginning at midnight that we use for normal timekeeping.
The planetary days are divided into twenty four planetary hours with the first hour of the day beginning at sunrise and the last hour of the day ending at sunrise of the next planetary day.
Renaissance Astrology offers TPHP ("The Planetary Hours Program") an easy to use computer program for Windows 95, 98, Me and XP, that provides detailed and accurate planetary hour information for automatically for thousands of predefined locations in the U.S. Latitude and longitude can also be entered by hand for non-U.S. locations.
www.renaissanceastrology.com /planetaryhoursarticle.html   (1419 words)

  
 Planetary Nebula Sampler
A planetary nebula forms when a star can no longer support itself by fusion reactions in its center.
It is estimated that there are about 10,000 planetary nebulae in our galaxy, so they are a relatively common, although short-lived phase (about 25,000 years) of the stellar life cycle.
NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under cooperative agreement with the National Science Foundation.
www.noao.edu /jacoby/pn_gallery.html   (397 words)

  
 Brown Planetary: Research Themes
Planetary Geological Processes includes fundamental themes such as impact cratering, volcanism, and tectonism and their relationship to planetary environments, crusts, and interiors.
Members of the planetary group are planning an active role in the analysis of these data and in bridging disciplines to bring new understanding to the critical area of new research opportunities (e.g., global surface processes, advanced analysis approaches applied to change detection, etc.).
Within the department, members of the Planetary Group regularly interact with research by other subgroups: mineralogy, petrology, geochemistry (geochemical and petrological analysis of lunar samples and meteorites, planetary petrogenesis, and experimental studies in planetary environmental conditions); tectonophysics (terrestrial and planetary tectonic and geophysical processes); and climate dynamics (basic parameters affecting climate change on the planets).
www.planetary.brown.edu /planetary/themes.html   (2145 words)

  
 Planetary Nebulae
A planetary nebula can result as a star with mass of less than several times the solar mass ("low mass" star) ejects mass in the red giant stage, near the end of the star's life.
In this stage, the central part of the star, which is about the size of the earth, consists of a carbon ash core, a shell in which helium is fusing to carbon, and a shell where fusion of hydrogen to helium has temporarily ceased.
They are called planetary because to early astronomers these fuzzy patches seemed like the disks of planets, but, of course, we now know they have no association with planets.
fusedweb.pppl.gov /CPEP/Chart_Pages/5.Plasmas/Nebula/Planetary.html   (500 words)

  
 Planetary Geology Group - Welcome!
Planetary Geology is the study of the origin, evolution, and distribution of matter condensed in the form of planets, satellites, comets and asteroids.
The approach used at Arizona State University in solving planetary geology problems incorporates results from spacecraft data analyses, laboratory simulations of various planetary processes, and field studies of features on Earth analogous to extraterrestrial features.
The Planetary Geology Group is active in many different fields of Geology and in particular, Planetary Geology.
europa.la.asu.edu   (180 words)

  
 Planetary Nebulae   (Site not responding. Last check: 2007-11-02)
Well, because the lifetimes of planetary nebulae are so short, they live for only 50,000 or so years (which is less than 0.001 % of the Sun's lifetime), the chances of seeing this phase of stellar evolution is very small.
Planetary nebulae are characterized by a shell of material (of mass roughly 10 to 20 % of a solar mass) moving away from a hot (temperatures of 20,000 to more than 100,000 Kelvins), faint star (in their center) at a speed of 10 to 30 kilometers per second.
Planetary nebula fade away after 50,000 or so years because the material in the shell becomes too rarified to be seen.
zebu.uoregon.edu /~imamura/208/feb22/feb22.html   (527 words)

  
 Planetary Phenomena   (Site not responding. Last check: 2007-11-02)
This is an English "front end" to the planetary phenomena pages that I initially put together for a Spanish astronomy magazine called "Tribuna de Astronomía y Universo" (the odd name is the result of two magazines, "Tribuna de Astronomía" and "Universo", merging).
All these predictions (with the sole exception of solar and lunar eclipses) are derived from the JPL DE406 ephemeris, a numerical integration of the equations of motion of the planets spanning the period 3000 BC to 3000 AD.
All planetary pairings where the minimum distance is smaller than 20' are contained in the conj20.zip file linked from the page.
www.telefonica.net /web/arturorm/cielos/index.html   (1659 words)

  
 Tim Clark - What Is A Planetary Village?
The vision of the Planetary Village imagines all of these qualities pervading a community with the scale and dynamics of a traditional village.
This is very important in developing and incarnating within humanity a sense of planetary beingness, a sense of being part of a single, unified species and ecology.
This means that the movement back toward villages and communities will increase, but now these will be planetary villages that deal with the land in new ways and that draw not only on local environmental influences for self-definition, but on the planetary perspective as a whole.
www.context.org /ICLIB/IC01/Clark.htm   (1633 words)

  
 APOD Index - Nebulae: Planetary Nebulae
The term planetary nebula, used to describe this general class of objects, is misleading.
planetary nebula that fades gradually over thousand of years.
The above cocoon, the planetary nebula designated NGC 2440, contains one of the hottest white dwarf stars known.
antwrp.gsfc.nasa.gov /apod/planetary_nebulae.html   (381 words)

  
 Amazon.com: Books: Planetary Vol. 1: All Over the World and Other Stories   (Site not responding. Last check: 2007-11-02)
Planetary is sort of a cross between the X-files and Allen Moore's *League of Extraordinary Gentlemen*, retaining the "Truth is out there" paranoia of the former and the basic premise of the latter (extraordinary humans brought together by unknown "boss" to solve mysteries).
Planetary's main adversaries are clear analogues of Marvel's Fantastic Four; Snow's hatred of them, and the reasons for it, should inspire readers to take another look at the assumptions that allow superhero universes to function.
Planetary is a thrill to read, but it's a very intelligent thrill that proves that action stories don't need to check their brains at the door.
www.amazon.com /exec/obidos/tg/detail/-/1563896486?v=glance   (1980 words)

  
 [No title]
Much as a butterfly emerges when its chrysalis is ejected, planetary nebulae are formed when a red giant star ejectes its outer layers as clouds of luminescent gas, revealing the dense, hot, and tiny white dwarf star at its core.
However, "planetary nebulae" are not made of planets, and no planets are visible within them.
Rings around planetary nebulae: One of the more surprising recent discoveries from Hubble images is that many planeetary nebulae are srrounded by signle or multiple rings of material.
www.astro.washington.edu /balick/WFPC2   (2975 words)

  
 BBC NEWS | Science/Nature | Solar System 'twin' found   (Site not responding. Last check: 2007-11-02)
The planet's parent star, called HD 70642, is slightly too faint to be seen with the unaided eye, but is easily visible in the southern sky using binoculars.
Prior to the discovery of planets circling other stars, it was predicted that other planetary systems would be similar to our Solar System - giant planets orbiting beyond 4 Earth-Sun distances in circular orbits, and smaller, rocky worlds in inner orbits.
Planetary systems are much more diverse than anyone imagined.
news.bbc.co.uk /2/hi/science/nature/3041220.stm   (582 words)

  
 Planetary Astronomy   (Site not responding. Last check: 2007-11-02)
Center for Earth and Planetary Studies and its Regional Planetary Image Facility (RPIF) located at the National Air and Space Museum, Smithsonian Institution are pleased to announce the availability of its WWW server.
ICARUS is the official publication of Division of Planetary Sciences of the American Astronomical Society and is dedicated to reporting the results of new research-- observational, experimental, or theoretical-- concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our solar system or extrasolar systems.
The Planetary Science Institute (PSI) is a non-profit organization (a division of San Juan Institute) that conducts a wide variety of basic research in planetary science and allied fields.
fits.cv.nrao.edu /www/yp_planetary.html   (3708 words)

  
 Planetary Data System: Home
The PDS archives and distributes scientific data from NASA planetary missions, astronomical observations, and laboratory measurements.
PDS is continually upgrading and updating its archives, to better serve the needs of its user communities.
These nodes specialize in specific areas of planetary data.
pds.jpl.nasa.gov   (197 words)

  
 The Planetary Collegium
Through transdisciplinary inquiry and shared discourse, the Planetary Collegium aims to produce new knowledge in the context of  the arts, with special reference to technoetic research and to advances in science and technology.
The Planetary Collegium is a community of artists, theorists and scholars, based throughout the world, working at the cutting edge of  a wide field of inquiry — installation, dance and performance, architecture, music, narrative, design - in the context of telematic and technoetic practices..
The Planetary Collegium has a transdisciplinary perspective which seeks the integration of art, science, technology, and consciousness research within a post-biological culture, and is involved in advancing the parameters of creative practice in consort with developments in telematics, Mixed Reality, Alife, architecture, hypermedia, agent technology, nanotechnology, transgenics, data imaging, intelligent environments, generative music, technoetics).
www.planetary-collegium.net /about   (2127 words)

  
 PLANETARY HOURS
A planetary hour is not exactly one hour; well, it is 60 minutes two days a year, but the rest of the days of the year, the planetary hour will be more than 60 minutes, and other days will be lower than 60 minutes.
For the best performance, it is suggested always to use the planetary day and the planetary hour, so if for example, the influence is related to Mars, then do the process on Tuesday, and in the first planetary hour just after the sunrise.
SATURN SYMBOL: To insert seriousness and stability in a mind, to induce quietness of mind in excessive altered agitation states, to reduce sexuality appetite and instincts, "to have the feet in the ground", to set limitations in whatever situation; aspects related to home and houses, to remove bad habits, for karmic related aspects.
www.internationalastrologers.com /planetary_hours.htm   (803 words)

  
 USGS Astrogeology: Planetary Geologic Mapping Home Page
Geologic mapping investigations of any imaged planetary body (except Earth) are proposed to NASA's Planetary Geology and Geophysics Program on an annual basis (generally due sometime between late April and early June) and then reviewed by the Lunar and Planetary Geoscience Review Panel.
Two primary programs underway now are the systematic mapping of Venus at 1:5,000,000 scale using Magellan SAR data and local (1:500,000) to regional (1:5,000,000) scale mapping of Mars based on medium- to high-resolution Viking images.
Geologic maps can be produced from existing map bases that are part of established map series (see the Index of Planetary Maps, 1992 or additions since 1992) or ones specifically generated for the geologic map.
astrogeology.usgs.gov /Projects/PlanetaryMapping/PGM_home.html   (463 words)

  
 Planetary Pride
If there is anything you saw in the store and can't find on here please let us know and we will get the price for you.
Planetary Pride : The Hemp Store - serving you for all your hemp needs from backpacks and hats, to pants and shirts we can put you out in style.
Planetary Seed Bank carrying a wide range of top quality genetics from around the world.
www.planetarypride.com   (181 words)

  
 Amazon.com: Books: Planetary: Leaving the 20th Century - Volume 3   (Site not responding. Last check: 2007-11-02)
In this 3rd installment of Planetary (collecting issues 13-18), Ellis and Cassaday take their X-Files-on-steroids creation through a familiar landscape of comicbook/literary/pop culture - including take-offs on the League of Extraordinary Gentlemen, Thor, kung fu flick 'Crouching Tiger/Hidden Dragon', Tarzan, and Jules Verne's sci-fi classic 'From the Earth to the Moon'.
This third collection of Planetary continues the story with the high quality writing and beautiful art of the other two volumes.
Planetary is an elegant piece of work of high intelligence and literate appeal.
www.amazon.com /exec/obidos/tg/detail/-/1401202934?v=glance   (902 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.