Definitions for planets
plan·ets

WikipediaRate this definition:0.0 / 0 votes

1. planets

   A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk. Planets grow in this disk by the gradual accumulation of material driven by gravity, a process called accretion. The Solar System has at least eight planets: the terrestrial planets Mercury, Venus, Earth and Mars, and the giant planets Jupiter, Saturn, Uranus and Neptune. These planets each rotate around an axis tilted with respect to its orbital pole. All of them possess an atmosphere, although that of Mercury is tenuous, and some share such features as ice caps, seasons, volcanism, hurricanes, tectonics, and even hydrology. Apart from Venus and Mars, the Solar System planets generate magnetic fields, and all except Venus and Mercury have natural satellites. The giant planets bear planetary rings, the most prominent being those of Saturn. The word planet probably comes from the Greek planḗtai, meaning "wanderers". In antiquity, this word referred to the Sun, Moon, and five points of light visible by the naked eye that moved across the background of the stars—namely, Mercury, Venus, Mars, Jupiter and Saturn. Planets have historically had religious associations: multiple cultures identified celestial bodies with gods, and these connections with mythology and folklore persist in the schemes for naming newly discovered Solar System bodies. Earth itself was recognized as a planet when heliocentrism supplanted geocentrism during the 16th and 17th centuries. With the development of the telescope, the meaning of planet broadened to include objects only visible with assistance: the ice giants Uranus and Neptune; Ceres and other bodies later recognized to be part of the asteroid belt; and Pluto, later found to be the largest member of the collection of icy bodies known as the Kuiper belt. The discovery of other large objects in the Kuiper belt, particularly Eris, spurred debate about how exactly to define a planet. The International Astronomical Union (IAU) adopted a standard by which the four terrestrials and four giants qualify, placing Ceres, Pluto and Eris in the category of dwarf planet, although many planetary scientists have continued to apply the term planet more broadly.Further advances in astronomy led to the discovery of over five thousand planets outside the Solar System, termed exoplanets. These include hot Jupiters—giant planets that orbit close to their parent stars—like 51 Pegasi b, super-Earths like Gliese 581c that have masses in between that of Earth and Neptune; and planets smaller than Earth, like Kepler-20e. Multiple exoplanets have been found to orbit in the habitable zones of their stars, but Earth remains the only planet known to support life.

WikidataRate this definition:0.0 / 0 votes

1. Planets

   Planets is Adema's third album. This was the band's first and only album with Luke Carracioli, who left the band on October 25, 2005, citing "personal differences". The album was released by Earache Records on April 5, 2005. It obtained a peak position of 152 on the Billboard 200 before falling off. The album featured three singles: "Tornado", "Shoot the Arrows", and the self-titled track "Planets"; the single "Planets" was featured in the movie Cry Wolf. Planets is the first Adema album not to feature the Explicit Content sticker on its case.

The Nuttall EncyclopediaRate this definition:0.0 / 0 votes

1. Planets

   bodies resembling the earth and of different sizes, which revolve in elliptical orbits round the sun, and at different distances, the chief of them eight in number, two of them, viz., Mercury and Venus, revolving in orbits interior to that of the earth, and five of them, viz., Mars, Jupiter, Saturn, Uranus, and Neptune, exterior, the whole with the planetoids (q. v.) and comets constituting the solar system.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Planets

   Heavenly bodies with their own motion among the stars, revolving, in the case of the solar system, around the sun, along the plane of the ecliptic. They are grouped into inner planets and outer planets, based on distance from the sun and common characteristics.

Editors ContributionRate this definition:0.0 / 0 votes

1. planetsnoun

   Plural noun of planet.

   There are a known number of planets in our solar system and many more we will discover when we need it.

   
   

   Submitted by MaryC on March 8, 2016  

Anagrams for planets »

1. planest

2. platens

How to pronounce planets?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say planets in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of planets in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of planets in Pythagorean Numerology is: 6

Examples of planets in a Sentence

1. Nikku Madhusudhan:

   Essentially, when we've been looking for these various molecular signatures, we have been focusing on planets similar to Earth, which is a reasonable place to start, but we think Hycean planets offer a better chance of finding several trace biosignatures.

2. Rice Hartigan:

   Alignments between these two planets are rather rare, occurring once every 20 years or so, but this conjunction is exceptionally rare because of how close the planets will appear to one another, youd have to go all the way back to just before dawn on March 4, 1226, to see a closer alignment between these objects visible in the night sky.

3. Professor Lattanzio:

   A series of astronomical observations obtained over the period 1986 to 2018 supports the idea that life is a cosmic rather than a purely terrestrial or planetary phenomenon, these include the detection of biologically relevant molecules in interstellar clouds and comets, mid-infrared spectra of interstellar grains and the dust from comets, a diverse set of data from comets including the Rosetta mission showing consistency with biology and the frequency of Earth-like or habitable planets in the Galaxy.

4. Suzanne Dodd:

   We need to develop an orbiter for each of those planets, at Uranus, the five major moons are very different. They have unique geological history, so we need to understand how they were formed or captured. Uranus has a rotational pole that is tipped on its side more than the Earth, so we need an understanding of why that happened. At Neptune, there are a great amount of features in atmosphere similar to Jupiter and Saturn. And Neptune's moon Triton is of interest because of the methane geysers on it.

5. Jennifer Burt:

   Compared to most transiting planets detected thus far, which often have scorching temperatures in the many hundreds or thousands of degrees, TOI-1231 b is positively frigid.

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References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Planets
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=planets
3. ^ The Nuttall Encyclopedia
   https://www.gutenberg.org/cache/epub/12342/pg12342-images.html#Planets