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Basically it has to do with the blackbody spectrum.
Hot objects emit a broad spectrum of light, not just a single color. At the point where the temperature is such that the blackbody radiation peaks in the ultraviolet the overall spectrum is such that the emitted light appears to us as largely blue.
There may well be purple stars, but from our eyes, they appear blue. Our eyes, slightly deceive us.
See the related link for a picture of how our eyes perceive colour at a given temperature, and another for a video explaining in detail this question.
Our Sun would appear a kind of peach, if we had eye's better developed to a blackbody spectrum
Purple is a combination of blue and red. The light emitted by a star is of such a nature (black body radiation curve) that there is one predominate colour and lesser component of lower frequencies. (Higher frequencies are rapidly attenuated.) It is therefore impossible to get two colour emission peaks in both the blue and red of equal intensity - consequently no purple stars.
However you could have two stars closely orbiting each other: one blue and the other a red super giant, that at a great distance would look like a purple star, or a red star with a super hot white dwarf, that would work too. Interesting to note, the star Algol might fulfill this combination.
What else can I help you with?
Is there a such thing as a purple star that is seen as a star on earth but a moon on mars?
No, stars are distant celestial objects that emit their own light, while moons are natural celestial objects that orbit planets. A star cannot transform into a moon based on the observer's location. A purple star does not exist in reality, as stars emit light in a range of colors based on their temperature.
What do purple sea urchins eat?
The Purple Sea Urchin's diet consists of plants, animal matter, including algae, dead fish, sponges, decaying matter, mussels, barnacles, and kelp. The Purple Sea Urchin is the prey of crabs, sunflowers stars, snails, most birds, fish, sea otters, and humans. The Purple Sea Urchin is actually a delicacy in some countries.
Why does your son have a purple thumb?
he likes purple popsicles
What colours are being absorbed by purple permanganate in a spectro?
Purple potassium permanganate absorbs green and yellow wavelengths of light in a spectrophotometer, resulting in its characteristic purple color.
If a star is purple does it mean it cold?
There is no such thing as a purple star.
Are purple sea stars poisoness?
yes
What are the release dates for Pawn Stars - 2009 Purple Haze?
Pawn Stars - 2009 Purple Haze was released on: USA: 27 February 2014
Is an orange star hotter or colder than a purple star?
An orange star is typically cooler than a purple star. Star color is related to temperature, with blue stars being the hottest, followed by white, yellow, orange, and red stars. Purple stars are not common in astronomical classifications, but if we consider purple as a blend of blue and red, then they would likely be hotter than orange stars.
Any super stars favorite colors purple?
Justin Bieber!
Can stars be purple?
Stars may at times appear purple, but that would be an optical illusion caused by atmospheric aberrations, or something of that nature. Occasionaly stars, as seen form earth, look green, too, but that is also an example of an illusion or a trick of human vision.
What colour is Mace windu's light Sabre from stars wars?
It's purple. It is one of the colors for the jedi's (blue,green,purple.)
What kind of spectrum do your stars emit?
Red at one end, purple at the other.
Are there any purple stars in the night sky?
No, there are no purple stars in the night sky. Stars emit light in different colors, but purple is not a common color for stars. The colors we typically see in the night sky are white, yellow, orange, and red.
What color are blue giant stars?
usually blue, but some are purple-ish like.
How stars get hot?
well, stars are balls of gas (hydrogen) which fuses into helium. is also how how the sun produces energy but stars can reach a temp. of 20,000 if purple if it is blue probley 10,000
In Super Mario Galaxy beat the game but there are no purple comets anywhere where are they?
Make sure you have all 100 stars once you get them all, the purple comets will come.
How much is a purple 3 cent win the war stamp worth?
I have a 3 cent win the war stamp and i was wondering how much it is worth it is purple with a eagle and stars
