Planetary Linguistics
Names of the Planets
English is generally recognized as the international language for professional astronomy. However, the various languages often also have their own words which are used in everyday speech.
Planetarium
Related Category: Astronomy: General
optical device used to project a representation of the heavens onto a domed ceiling; the term also designates the building that houses such a device.
Planetarium
A planetarium is a theater built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation.
Planetary Nebulae
Planetary nebulae (PN) represent the last stages of evolution for low- and intermediate-mass stars whose Main Sequence mass was less than about 8 solar masses.
Planets around other Stars
Artist's concept of a rocky planet in orbit around a distant star.
Click on image for full size
NASA, ESA and G. Bacon (STScI)
Did you know that about 200 planets have been discovered around distant stars?
Planetary Nursery?
Featured on
A disk of gas and dust glows softly in this artist's concept of the star system known as HD 97048.
Planet Atmospheres and Magnetic Fields
This data is from the National Space Science Data Center's Fact Sheet site. Click on a planet's name to bring up the fact sheet at NSSDC. I have put together a list of links to excellent tours of each planet.
Planets rarer than we thought, Hubble search turns up blank
The globular cluster 47 Tucanae, as seen by the Anglo-Australian telescope (left) and the Hubble Space Telescope (right).
Planet
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History
A planet (Vulcan) Planet was the common designation for a certain type of celestial body orbiting a star. They occurred in a great variety of different compositions, masses, and surface conditions.
Planetary nebulae, some of the loveliest objects in the sky, are complex shells of gas that have been ejected by dying advanced giant stars like Mira. They were discovered as a set and given their name by William Herschel in the late 1700s.
Planet-Tac-Toe
This activity can be used in conjunction with the StarChild Level 1 Solar System information on Planets
Objectives: ...
planets
(in small body (astronomy))
Earth (in Earth (planet): Accretion of the early Earth; in chemical element: Early history of the Earth; in geologic history of Earth: The pregeologic period ) ...
Planet X - Fact and Fiction
Sedna Is it Planet X?
Astronomer, Clyde Tombaugh, who discovered ...
planetary science
Home ... Science and Technology Astronomy and Space Exploration Astronomy: General ...
Essential reading Compare
side-by-side Science of Everyday Things A Dictionary of Astronomy The Columbia Encyclopedia, ...
Planetary phase
From Wikipedia, the free encyclopedia
Jump to: navigation, search ...
Planet from another galaxy discovered
DR EMILY BALDWIN
ASTRONOMY NOW
Posted: 19 November 2010 ...
Planetary information
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto diameter (Earth=1) 0.382 0.949 1 0.532 11.209 9.44 4.007 3.883 0.180 diameter (km) 4,878 12,104 12,756 6,787 142,800 120,000 51,118 49,528 2,300 mass (Earth=1) 0.
Planetary gravity-assist,
once more
What is the connection with planetary gravity-assist maneuvers?
A Planetary Delight
Throughout the history of mankind, the human race has always been fascinated by the planets. These objects seem to move in relation to the so called "fixed" background stars.
Exoplanet: n. a planet that orbits a star outside the solar system.
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
terrestrial planet ...
The Planets
The Earth's solar system is made up of the sun and the bodies that orbit around it.
These bodies include eight planets and more than 70 known moons, asteroids, comets and meteoroids, as well as interplanetary dust and gases.
Planetary system formation coincides with the process of star formation in which our Sun belongs to the generation of stars created 4.6 billion years ago, when our galaxy was roughly half its present age.
Planet:
(Greek planetes, "wanderers"), any body (except a comet, meteoroid, or satellite) revolving in an orbit around the Sun or around some other star.
Planet
A planet (from the Greek planetes or "wanderers") is a body of considerable mass that orbits a star and that doesn't produce energy through nuclear fusion.
Planets of the Solar System
Overview
As the solar system emerged from its parent nebula, a young star was surrounded by a disk of dust and gas that was starting to clump in various places.
Planetary nebulae form when a star can no longer support itself by fusion reactions in its center.
Planetary Nebula
A nebula produced when a star expels its outer layers. Many planetary nebula are spherical, and appear to be nearly perfect circles to observers since the largest occurs for the portions of the sphere tangent to the line of sight.
Planet Activities and Quizzes
Planet Coloring pages
An interactive puzzle on the Solar System.
Find It!, a quiz on the planets.
Jovian Planet DefinitionExtrasolar Planet DefinitionInferior Planets Definition
Related Articles ...
2. Which planet is the hottest?_______________________
3. Is Venus or Mars the planet closest in size to the Earth? ________________
4. Is Earth the densest planet in our Solar System? _______________ ...
What keeps planetary rings in place?
The Answer
You can think of rings as a bunch of tiny moons, all in a similar orbit around the planet.
Southern Hemisphere view of the Moon and Planets for the month
Each of the pages gives a guide to the visibility of the Moon, planets and to solar system events during the month.
Even in Copernicus' day, educated people had a very good idea of the relative distances to the known planets in terms of the Astronical Unit -- the only problem was that no one knew how far that was.
Planets
The eight planets of our Solar System are the smallest and best-studied astronomical bodies. All of the planets within the Solar System have been visited by our spacecraft.
Planetary scientists sharing ideas and discoveries.
Planetary Science Research Discoveries (PSRD) is an educational site sharing the latest research on meteorites, planets, and other solar system bodies being made by NASA-sponsored scientists.
Planet
Wikipedia, the free encyclopedia - Cite This Source
A planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, ...
Planetary Surfaces and Processes Activities
Exploring Crustal Material from a Mystery Planet (PDF, 109 KB)
Geologic Landforms of Mars
Geologic Landforms of Venus
Geologic Landforms Seen on Aerial Photos
Introduction to Photogeologic Mapping ...
Planet Rings Each of the four giant gas planets in the outer Solar System is orbited by rings of dust and small particles of matter. Saturn is famous for its rings.
PLANETS & MOONS
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
entire Web this site ...
3) Planetas y Enanos marrones
Otros problemas fundamentales han surgido como resultado de los descubrimientos fuera de nuestro Sistema Solar.
The Planets
The Solar System as we know it today contains 8 planets - the four rocky inner planets of Mercury, Venus, Earth and Mars, and then the four gas giants, comprising Jupiter, Saturn, Uranus and Neptune, ...
Dwarf Planets and Small Solar-System Bodies
The words asteroid, minor planet and planetoid are (unofficial and) interchangable.
BASIC PLANETARY DATA
The mean distance of the Earth from the Sun is approximately 1.5 {times} 10 kilometres. The planet orbits the Sun in a path that is presently more nearly a circle than are the orbits of most other planets.
Dwarf Planets
Like the eight larger planets, the class of Solar System objects newly defined as "dwarf planets" are massive enough to be roughly round in shape.
Planetary scientists may order WTP CD-ROM through the Planetary Data System. Welcome to the Planets CD-ROM is available to the general public through the National Space Science Data Center. (NSSDC).
Planets
Images of the planets in our solar system taken by NASA spacecraft are grouped together to show (from top to bottom) Mercury, Venus, Earth and its moon, Mars, Jupiter, Saturn, Uranus and Neptune. Image Credit: NASA ...
A planet was tentatively discovered orbiting 51 Pegasi by a wobble in the star's radial velocity, monitored by looking at 5000 lines in the visible spectrum. The wobble could be caused by a 4.
A planet is seen best at its greatest elongation.
The orbits of the inferior planets restrict their greatest elongations.
The planets, as viewed in the sky, exhibit characteristic aspects and phases.
Moon, Planets and Aurora, Oh My!
Abstract
A rare planetary conjunction, a more rare Aurora (a red one), film in the camera, a good tripod and a kid to share it with. A tale of my lucky Astronomical night.
The nine planets of the solar system all orbit round our star, the sun. Up until relatively recently it was impossible to detect whether planets existed around other stars.
The term planet comes from the Greeks for "wanderer".
To ancient astronomers who didn't have telescopes to view the skies, these five wanderers(Uranus and Neptune had yet to be discovered) were always in different places along with the moon.
NASA JPL Planets page
Space Telescope Science Institute's ExInEd program (download PlanetQuest)
Return to PLANET definition ...
The dwarf planet classification is only 5 years old(2011) and may be reconsidered in the future based on scientific discoveries.
The main difference between a planet and a dwarf planet is that it shares its orbit with large celestial bodies.
As a dwarf planet it fulfills most of the criteria for being a planet with the exception that it doesn't have the gravitational pull, because of its size, to clear space surrounding it of other celestial bodies.
Why Do The Planets Line Up With Each Other?
One of the most beautiful sights of the night sky is to see two or even more planets group together as if they were a cluster of jewels on a ring.
[19.4] EXTRASOLAR PLANETS & PLANETARY EVOLUTION
[19.4] FUTURE EXTRASOLAR PLANET HUNTING EFFORTS
[19.5] COMMENTS, SOURCES, & REVISION HISTORY ...
may be the life on some planets had existed before the birth of earth. there are more than billions of planets in different types of galaxies and by the way, ...
The Rings Node of NASA's Planetary Data System is devoted to archiving, cataloging, and distributing scientific data sets relevant to planetary ring systems.
Search the Rings Node Search the Web
Improved Rings Node Data Search - OPUS.
Planets
The first great fact to be noticed is that the planets revolve around the sun in the same direction.
 See also: Earth, Solar, Sun, Orbit, Solar System
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