- published: 09 Mar 2015
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A planet (from Ancient Greek αστήρ πλανήτης (astēr planētēs), meaning "wandering star") is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals. The term planet is ancient, with ties to history, science, mythology, and religion. The planets were originally seen by many early cultures as divine, or as emissaries of deities. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union (IAU) officially adopted a resolution defining planets within the Solar System. This definition has been both praised and criticized, and remains disputed by some scientists since it excludes many objects of planetary mass based on where or what they orbit.
The planets were thought by Ptolemy to orbit the Earth in deferent and epicycle motions. Although the idea that the planets orbited the Sun had been suggested many times, it was not until the 17th century that this view was supported by evidence from the first telescopic astronomical observations, performed by Galileo Galilei. By careful analysis of the observation data, Johannes Kepler found the planets' orbits to be not circular, but elliptical. As observational tools improved, astronomers saw that, like Earth, the planets rotated around tilted axes, and some shared such features as ice caps and seasons. Since the dawn of the Space Age, close observation by probes has found that Earth and the other planets share characteristics such as volcanism, hurricanes, tectonics, and even hydrology.
The lights are frozen, see them spinning 'round my head.
Planets turning, but whose to say they're really there?
Because illusions serve to trick my mind and I just wanna go out tonight.
Hate the thought of being here alone.
But there's nothing going on down the streets, now the bars have all shut down.
The Suego Faults is just a dream that I'm waking up from now.
And I'd love to watch you spin around, but I'm running out of time.
The skies been playing with colossal fires,
But I can't escape the feeling of while I'm looking left, looking right,
There's something missing out there tonight!
I never seem to find what I desire.
So I'll spill out under the frozen lights, and I'll watch them until I'm drunk.
And if tomorrow the sun should rise, a new day has begun.
But I spend my whole life spinning around and never moving on.
Come on, fighter, here's what I'm telling you.
A Dreamer, love songs; it's all you'll ever do.
So fight on, you'll survive it.
You'll go spinning on your own.
Come on, fighter.
Here's what I'm telling you.
A Dreamer, love songs; it's all you'll ever do.
So fight on, you'll survive it.