are stars different colors?

Question

why don't they apper like that on earths surface?

Answer 1

Yep

Answer 2

Yes, there are plenty of different colored stars. The color of a star is related to its surface temperature. The higher the surface temperature, the more "blue" the star will be, and the lower the temperature, the more "red" the star will be. Also, you *can* see different colored stars from Earth. Betelgeuse is a good example; it is a bright red star in the constellation Orion.

Answer 3

There are blue, yellow, red, and white stars. The stars we see are called white dwarfs though. You can't really see the other stars from Earth.

Answer 4

Stars have different colours like red, blue ,yellow ,white . I know that
the red is sometimes the hottest star.

Answer 5

Yes stars are different colours and they don't show like that here because of refraction of light and they are so far away.

Answer 6

Yes they certainly are. Hotter stars burn bluer, redder means cooler. and when the moon hits your eye like a big pizza pie, thats amore!

Answer 7

Stars vary considerably in age, lifespan, size, mass, colour, luminosity, surface (photosphere) temperature, core temperature, composition (how much Hydrogen, how much Helium, and how much of which heavier elements is present), in the nuclear fusion process in which they are currently engaged and in their ultimate fate in Old Age,

You need to get to grips with the Morgan-Keenan Spectral Classification of stars and the Hertzsprung-Russell Diagram to understand this diversity.

MORGAN-KEENAN SPECTRAL CLASSIFICATION OF STARS

The common classes are normally listed from hottest to coldest (with mass, radius and luminosity compared to the Sun) and are given in the following table. The Sun is a Class G star.

Class Temperature Star colour Mass Radius Luminosity
O: 30,000 - 60,000 K Bluish ("blue") 60 15 1,400,000
B: 10,000 - 30,000 K Bluish-white ("blue-white") 18 7 20,000
A: 7,500 - 10,000 K White with bluish tinge ("white") 3.2 2.5 80
F: 6,000 - 7,500 K White ("yellow-white") 1.7 1.3 6
G: 5,000 - 6,000 K Light yellow ("yellow") 1.1 1.1 1.2
K: 3,500 - 5,000 K Light orange ("orange") 0.8 0.9 0.4
M: 2,000 - 3,500 K Reddish orange ("red") 0.3 0.4 0.04

Spectral classes are further subdivided by Arabic numerals (0-9). For example, A0 denotes the hottest stars in the A class and A9 denotes the coolest ones. The sun is classified as G2.

Class O
Class O stars are very hot and very luminous, being bluish in colour; in fact, most of their output is in the ultraviolet range. These are the rarest of all main sequence stars, constituting as few as 1 in 32,000. O-stars shine with a power over a million times our Sun's output.

Examples: Zeta Puppis, Lambda Orionis

Class B
Class B stars are extremely luminous and blue. As O and B stars are so powerful, they live for a very short time. They do not stray far from the area in which they were formed as they don't have the time. They constitute about 0.13% of main sequence stars -- rare, but much more common than those of class O.

Examples: Rigel, Spica, the brighter Pleiades

Class A
Class A stars are amongst the more common naked eye stars. As with all class A stars, they are white or bluish-white. They comprise perhaps 0.63% of all main sequence stars.

Examples: Vega, Sirius

Class F
Class F stars are still quite powerful but they tend to be main sequence stars. These represent 3.1% of all main sequence stars.

Examples: Canopus, Procyon

Class G
Class G stars are probably the best known, if only for the reason that our Sun is of this class. These are about 8% of all main sequence stars.

Examples: Sun, Capella

Class K
Class K are orangish stars which are slightly cooler than our Sun. Some K stars are giants and supergiants, such as Arcturus while others like Alpha Centauri B are main sequence stars. These make up some 13% of main sequence stars.

Examples: Arcturus, Aldebaran

Class M
Class M is by far the most common class. Over 78% of stars are red dwarfs, such as Proxima Centauri. M is also host to most giants and some supergiants such as Antares and Betelgeuse, as well as Mira variables.

Examples: Betelgeuse, Barnard's star

THE HERTZSPRUNG-RUSSELL DIAGRAM

The Hertzsprung-Russell diagram (usually referred to by the abbreviation H-R diagram or HRD, also known as a Colour-Magnitude diagram, or CMD) shows the relationship between absolute magnitude, luminosity, classification, and surface temperature of stars. The diagram was created circa 1910 by Ejnar Hertzsprung and Henry Norris Russell, and represented a huge leap forward in understanding stellar evolution, or the 'lives of stars'.

Most of the stars occupy the region in the diagram along the line called main sequence. During that stage stars are burning hydrogen in their cores. The next concentration of stars is on the horizontal branch (helium fusion in the core and hydrogen burning in a shell surrounding the core).

You need to look at a H-R Diagram (see second link) to appreciate how the various characteristics of stars correlate with one another.

Answer 8

some are red, others white, and different ones blue...the color of the star depends on its temperature...blue stars are the hottest....

Answer 9

no.
I think this is for planets that reflects the light.
for each layer of particles around the planet, it may get some colors.

Answer 10

when you are hit hard, the stars you see are usually of a single colour.