The star itself is not polluted by us, it is the light that is polluted, the further away from man-made lights you go, the lower the levels of light pollution are.
In the countryside, miles out of town.
the core of the earth, a star, the sun, maybe mount Everest?
* Cockroach species * Space * Energy * Death * A star * Entropy * A black hole * Sun * Gravity Everything in humanity's grasp can be polluted by us. That's why it's important to be environmentally friendly.
A star or a circle with a star in it.
They are labeled with a star.
A star.
Depending on where it and the Earth are in their orbits, the planet Venus can be either the "morning star" or the "evening star". In ancient times, some astronomers used the term for the planet Mercury, but in our light-polluted era, Mercury is tough to see.
A star with a temperature less that 3,700K has a spectral class of M and will have the colour red.
Energy Star dishwashers use less electricity, although they generally use less water as well.
If the bright star is located farther away from Earth than the less bright star, it will appear dimmer due to the inverse square law of light intensity. The amount of light reaching Earth decreases with distance, so a closer, less bright star can appear brighter than a further, brighter star.
The faint light from many stars will only really show on a very dark, cloudless night. Light pollution from nearby cities also affect whether you can see the stars clearly. If you are in an area where there are no lights (out at sea, in the countryside, etc) the stars will often appear very bright and their numbers impressive.
It is difficult to find places completely free of human pollution, but some remote areas like deep ocean trenches, polar regions, and certain uninhabited islands have less human impact. National parks, marine reserves, and other protected areas also strive to maintain low levels of pollution.