A large body in the solar system that revolves around the sun. In our solar system, one of nine celestial bodies that orbit Sol.
A large, round object, larger than an asteroid, that is formed inside an accretion disk. Unlike a star, a planet does not produce its own energy via nuclear reactions. There are nine planets in our solar system. Ex. Earth.
A large object that revolves around the sun. We do no know if there are planets revolving around any other stars.
Earth is a planet that moves around the Sun. Earth is sometimes called the blue planet.
Large, spherical, rocky or icy body which orbits the Sun or another star.
Any of the seven celestial bodies that in ancient belief have motions of their own among the fixed stars. Any of the large bodies that revolve around the sun in the solar system. What we're on.
Refers to one of the planets in our solar system. In astrology, the sun and moon are also considered 'planets.' More info on Planets
low-mass body that orbits a star.
An object that is larger than a moon but smaller than a brown dwarf and that orbits a star. The Earth is a planet, and it is the third of a series of planets in our Solar System. In order of increasing distance from the Sun, the planets in our Solar System are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. While Pluto is conventionally listed as one of the planets, it is debatable whether its small size and odd orbit allow it to be classified as such. Planets have also been discovered orbiting around other stars; these planets are called extrasolar planets.
Literally, a "wandering star". To the unaided eye planets look just like stars. To ancient peoples the only obvious difference between a star and a planet was that planets moved through the constellations, while stars remained fixed on the celestial sphere.
Celestial wanderer; location. In astrology one of the Planets.
A body that orbits a star and does not give off its own light. A planet is generally much smaller than a star and can be made of solid, liquid, and/or gas.
one of the principal nonluminous bodies in orbit around the Sun or another star. There are nine in the Solar System.
A celestial body of substantial size (more than about 1000 km across), basically non-radiating and of insufficient mass for nuclear reactions ever to begin, ordinarily in orbit around a star.
Literally, from the Greek, wanderer. One of a number of objects which appear to move among the stars, over a period of time. Nowadays, applied exclusively to large objects which do so because they are in orbit around the Sun, or some other star.
A body that orbits a star in a solar system and which shines only by reflected light. This image of Saturn is courtesy of NASA GSFC. More about the planets...
Large spherical object shining by a star. Our planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto (+Charon ?)
Originally, an object in the sky which moved against that background of stars. Now it is used for any object that circles a star, and shines by reflected light.
A body that shines by reflecting sunlight. Planets can be made out of rock and metal, like Earth, or out of gas, like Jupiter.
A large rocky body formed by the gradual accretion of smaller rocky bodies orbiting around a star.
a heavenly body other than a comet, asteroid, or satellite that travels in orbit around the Sun; also such a body orbiting another star
An object bigger than an asteroid orbiting a Solar Wind star. Our solar system has nine planets.
An object that is formed in the disk surrounding a star. To be called a planet, an object must be more massive than Pluto (1/500 the Earth's mass) and less massive than ten times Jupiter's mass. Unlike stars, planets do not produce light of their own but merely reflect that of the star(s) they orbit.
any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system
a body fluid that carries food and obtaining energy and vital substances from within the body
a body in space that revolves around a star
a body of considerable mass that orbits a star and that doesn't produce energy through nuclear fusion
a body of Earth surrounded by sky
a body that directly orbits a star, is large enough to be round because of self gravity, and is not so large that it triggers nuclear fusion in its interior
a heavenly body which orbits a star
a large celestial body that orbits a star and does not shine on its own
a large object that orbits a star and produces very little or no energy
a large, round heavenly body that orbits a star and shines with light reflected from the star
a large space body which reflects the light of a star around which it revolves
a large space object which revolves around a star
an astronomical body in orbit around the Sun, or another star, which has a mass too small for it to become a star itself (less than about one-twentieth the mass of the Sun) and shines only by reflected light
an object which orbits the sun (or another star)
a non-luminous globe of relatively small mass, revolving round a star, a globe of incandescent gas
a relatively small, relatively cold object that revolves around a star
a sizeable body that orbits around a star
a solid heavenly body that revolves around the sun in the solar system
a special term applied to the larger members of our solar system
a sphere of either rock or gas that orbits the Sun
a spherical non-fusor which is born in orbit around a fusor
a spherical object never capable of core fusion, which is formed in orbit around an object in which core fusion occurs at some time
any larger bodies that orbit around the sun and are illuminated by the sun and not by an internal light source
the major bodies in the solar system that shine only by reflected light from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto
Any of nine solid, nonluminous bodies revolving about the Sun.
One of nine major bodies that orbit the Sun, visible to us by reflected sunlight.
(or "Target Body"). As used in this document, the term includes major planets, planet satellites, and other solar system objects that may be of scientific interest.
a celestial body that moves around a star
A nonluminous celestial body larger than an asteroid or a comet, illuminated by light from a star, such as the sun, around which it revolves. The only known planets are those of the Sun but others have been detected on physical (non-observational) grounds around some of the nearer stars.
a celestial body that is in orbit around the Sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and has cleared the neighbourhood around its orbit (official IAU definition dated 24 August 2006)
Derived from the Greek meaning 'wanderer', a planet is a body orbiting a star that is not a star itself. The classification also depends on size and orbital eccentricity, with planets generally considered to be quite large and with circular orbits. However, the term is not well defined.
An astronomical body with enough mass for its gravity to make it spherical but not enough to generate nuclear energy. Planets have non-intersecting orbits around stars or drift freely in space.
A spherical ball of rock and/or gas that orbits a star. The Earth is a planet. Our solar system has nine planets. These planets are, in order of increasing present distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Pluto, and Neptune.
A body that orbits a star such as the Sun.
a large rocky or gaseous body that orbits a star
A very large body in orbit around a star. Planets can be composed mainly of rock or of dense gases.
A relatively small body that orbits a star for instance, the Earth. (See solar system.)
the celestial body that has a greater mass than all other objects of the same orbit system together and that describes a well-defined, special orbit around a star.
Any of the nine largest bodies revolving about the Sun, or any similar bodies that may orbit other stars. Unlike stars, planets do not (for the most part) give off their own light, but only reflect the light of their parent star.
From the Greek "Planetes" or the wanderer. Describes any body that appears, from Earth, to move.
a large, nonluminous celestial body, esp. one of the nine in the solar system, that revolves around a star and often has one or more satellites.
A large object in orbit around a star that is not massive enough to be a star itself. Saturn (Planet)
describes any heavenly body which when viewed from Earth appears to move, as distinguished from fixed stars.
(1) Any one of the nine primary celestial bodies that orbit the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. (2) A similar body orbiting another star.
From an old word meaning "wanderer", the planets are those heavenly bodies that seem to move through the zodiac. In astrology, the planets include the Sun, the Moon and the Moon's Nodes (Dragon's Head and Tail). Those that do not move are known as the Fixed Stars. A committee of modern astronomers has recently redefined the term "planet" to mean "any body massive enough to be round that is not a star but is orbiting one". They have shifted Pluto to the status of a "dwarf planet". This new definition is generally irrelevant to astrology.
The International Astronomical Union defines "planet" as a celestial body that, within the Solar System,http://www.iau2006.org/mirror/www.iau.org/iau0603/index.html IAU 2006 General Assembly: Result of the IAU Resolution votes
