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Color from a "black box" (i.e., a ball of gas with no intrinsic color)
is a function of it's temperature.
Much like heating a piece of steel in a fire -
first it glows red, then yellow, then white, then blueish.
So the answer is that they're cooler than the sun.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agobecause Light cannot escape the gravitational pull of the red dwarf.
Wiki User
∙ 12y agoa long while through its life, a star will eventually burn out it's supply of hydrogen at its core. this causes the star to start to burn helium, oxygen and carbon.
Wiki User
∙ 12y agoBecause they are much cooler than the other stars
Wiki User
∙ 12y agoBecause they contain less mass than other stars, and it is easier to produce a red dwarf than any other stars.
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How is the sun and red dwarf different?
1. The sun is bigger then the red dwarf.2. The sun produces bright electric-like light unlike the red dwarfs dim elctric-like light.3. The sun is highly recognized in our solar system, but the red dwarf is not.
If red giants are cool stars why are they so bright?
Red giant stars emit less light per square meter of surface area than smaller, hotter stars, but their larger size means they have a larger surface area from which to emit light, so they emit more light overall.
Why are red giants so bright if they are so cool?
Red giant stars emit less light per square meter of surface area than smaller, hotter stars, but their larger size means they have a larger surface area from which to emit light, so they emit more light overall.
Do dwarf stars emit light?
Brown Dwarfs (maybe not true stars)Red Dwarfs (on the main sequence)Orange Dwarf (on the main sequence)Yellow Dwarfs (stars smaller than our sun but on the main sequence)White Dwarfs (old stars that have run out of hydrogen and are now off the main sequence)Neutron Stars (old large stars who's cores have collapsed during a supernova)---------------------------------------------------------------------------------Red dwarf - Like Proxima Centauri.White dwarf - A degenerate star. The remains of a Sun like star.Yellow dwarf - A G type main sequence star, like our own SunBlue dwarf - A hypothetical star formed from a red dwarf.Brown dwarf - A star that did not have enough mass to initiate nuclear fusion.Black dwarf - A hypothetical star formed when a white dwarf has cooled to absolute zero.Orange dwarf. A K type main sequence star, like Alpha Centauri B
How are the sun and a red dwarf similar?
Both the sun and a red dwarf are main sequence stars that produce heat and light by fusing hydrogen in their core and turning it into helium.
What if the sun was replaced by a red dwarf?
We would all be dead. There is a good chance that we would be tidally locked. Also most red dwarfs emit their light as infrared, not visible and are very variable in their output.
What kind of radiation does red laser pointers emit?
Red laser light.
What color are the cooler stars?
Colder stars emit red light. Hot stars emit large amounts of green light with small amount of red and blue light, which balances out to a white color in human eyes.
Why do you know that lithium salts will never emit green light and copper salts will never emit red light?
Because they each have their own level of energy. Green light has more energy than red light.
What are the dimmest stars?
Black dwarf stars, they have cooled off so much they emit no detectable light (but some emit small amounts of microwaves that are barely detectable).
How is the sun and red dwarf different?
1. The sun is bigger then the red dwarf.2. The sun produces bright electric-like light unlike the red dwarfs dim elctric-like light.3. The sun is highly recognized in our solar system, but the red dwarf is not.
If red giants are cool stars why are they so bright?
Red giant stars emit less light per square meter of surface area than smaller, hotter stars, but their larger size means they have a larger surface area from which to emit light, so they emit more light overall.
Why are red giants so bright if they are so cool?
Red giant stars emit less light per square meter of surface area than smaller, hotter stars, but their larger size means they have a larger surface area from which to emit light, so they emit more light overall.
What is a small star that only gives of faint light and are cool?
That can either be an old white dwarf, a red dwarf. or a brown dwarf.
Could you emit the same amount of light energy per second which must emit more photons per second a source of red light or a source of blue light?
Red light has less energy per photon than blue light, so to get the same energy we would need more red photons.
What is the nearest red dwarf?
The nearest red dwarf is also our nearest star (after the Sun). Proxima Centauri at approximately 4.2 light years from us.
Do dwarf stars emit light?
Brown Dwarfs (maybe not true stars)Red Dwarfs (on the main sequence)Orange Dwarf (on the main sequence)Yellow Dwarfs (stars smaller than our sun but on the main sequence)White Dwarfs (old stars that have run out of hydrogen and are now off the main sequence)Neutron Stars (old large stars who's cores have collapsed during a supernova)---------------------------------------------------------------------------------Red dwarf - Like Proxima Centauri.White dwarf - A degenerate star. The remains of a Sun like star.Yellow dwarf - A G type main sequence star, like our own SunBlue dwarf - A hypothetical star formed from a red dwarf.Brown dwarf - A star that did not have enough mass to initiate nuclear fusion.Black dwarf - A hypothetical star formed when a white dwarf has cooled to absolute zero.Orange dwarf. A K type main sequence star, like Alpha Centauri B
