Dictionary » P » Planet

Planet

planet

1. (Science: astronomy) A celestial body which revolves about the sun in an orbit of a moderate degree of eccentricity. It is distinguished from a comet by the absence of a coma, and by having a less eccentric orbit. See solar system.

The term planet was first used to distinguish those stars which have an apparent motion through the constellations from the fixed stars, which retain their relative places unchanged. The inferior planets are mercury and venus, which are nearer to the sun than is the earth; the superior planets are mars, the asteroids, jupiter, saturn, uranus, and neptune, which are farther from the sun than is the earth. Primary planets are those which revolve about the sun; secondary planets, or moons, are those which revolve around the primary planets as satellites, and at the same time revolve with them about the sun.

2. A star, as influencing the fate of a men. There's some ill planet reigns. (Shak) Planet gear.

(Science: machinery) See Epicyclic train, under Epicyclic. Planet wheel, a gear wheel which revolves around the wheel with which it meshes, in an epicyclic train.

Origin: OE. Planete, F. Planete, L. Planeta, fr. Gr, and a planet; prop. Wandering, fr. To wander, fr. A wandering.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re:

... is NO evidence of microbe to human evolution. There is, however, abundant evidence that WE can create new species and WE can send them to other planets. Hence, we can extrapolate that there is a possibility that this was done to us in the past. The theory that LIFE is older than our planet is ...

See entire post
by Cat
Sat Mar 15, 2014 7:48 pm
 
Forum: Evolution
Topic: Irrefutable Facts Against Evolution
Replies: 52
Views: 55821

Neo-Orthogenesis and Neo-Darwinian evolution

... spawn technological evolution . Once again, I am not championing classical orthogenesis; nor do I believe that intelligence must evolve on a planet whenever life does; in fact I believe that intelligence is probably relatively rare in the Universe, happening perhaps as little as once per ...

See entire post
by valetudo
Tue Mar 11, 2014 11:12 am
 
Forum: Evolution
Topic: Neo-Orthogenesis and Neo-Darwinian evolution
Replies: 0
Views: 1521

Industrial Society Destroys Mind and Environment

... depends on how much each individual cares, and to measure that we need to look at background and education. What makes someone care about the planet? I wish I knew.

See entire post
by animartco
Fri Mar 07, 2014 1:58 pm
 
Forum: Ecology
Topic: Industrial Society Destroys Mind and Environment
Replies: 45
Views: 45155

Would an asteroid simply just pass through Jupiter

... The Galileo spacecraft dropped a probe into the atmosphere and it burned up after about 150 miles - that's not too far given the size of the planet! An additional thing to consider is the speed of impact. An asteroid would likely be travelling at a significant pace, and so would hit like ...

See entire post
by Babybel56
Fri Feb 28, 2014 8:38 am
 
Forum: General Discussion
Topic: Would an asteroid simply just pass through Jupiter
Replies: 4
Views: 1710

Re: Evolution or De-evolution?

... species and creates two new missing links. The amount of fossils is limited, thus we cannot expect to detect all species that ever lived on the planet. As of the useless increments, I'd suggest to watch this video: http://www.youtube.com/watch?v=Nwew5gHoh3E Further, you should study the frozen ...

See entire post
by JackBean
Wed Feb 19, 2014 10:18 am
 
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 41262
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 2,905 times. 
What links here | Related changes | Permanent link