It's temperature.
Blue = hot, red = cool.
The relationship is that the color is an indication of the star's surface temperature. For example, red stars are cooler, while blue stars are hotter. You can find more details in the Wikipedia article "Stellar classification".
A blue star is hotter than a red star. Blue stars have higher surface temperatures, typically exceeding 10,000 Kelvin, while red stars have lower surface temperatures, usually below 4,000 Kelvin. The color of a star is an indication of its temperature, with blue stars being the hottest and red stars being the coolest.
Not necessarily. The color of a star does not directly correspond to its age. Stars can be yellow at different stages of their evolution, depending on factors such as their mass and composition. The age of a star is typically determined by factors like its location on the Hertzsprung-Russell diagram and its position in a star cluster.
the color of the star regulus is blue-white
The color of Bernard's the star is red.
The color is basically an indication of its surface temperature.
nick goetz the shet
Stars are blue because of their age and temperature. Blue is an indication of a young HOT star, when reddish color means the star is aging
The relationship is that the color is an indication of the star's surface temperature. For example, red stars are cooler, while blue stars are hotter. You can find more details in the Wikipedia article "Stellar classification".
The star's temperature. The more blue the star is the hotter it is. Pure blue stars get up to around 18,000 k. The more red the star is the cooler it is. Pure red stars can get up to around 2,500 k. White, yellowish color stars are in the middle.
A blue star is hotter than a red star. Blue stars have higher surface temperatures, typically exceeding 10,000 Kelvin, while red stars have lower surface temperatures, usually below 4,000 Kelvin. The color of a star is an indication of its temperature, with blue stars being the hottest and red stars being the coolest.
The colour of a star is an indication of it's temperature, not it's age.
Not necessarily. The color of a star does not directly correspond to its age. Stars can be yellow at different stages of their evolution, depending on factors such as their mass and composition. The age of a star is typically determined by factors like its location on the Hertzsprung-Russell diagram and its position in a star cluster.
A change in color
The color of a star is closely related to its surface temperature due to blackbody radiation. Hotter stars emit more blue and ultraviolet light, while cooler stars emit more red and infrared light. By observing a star's color, astronomers can estimate its temperature using the Wien's displacement law, which states that the wavelength of peak emission shifts inversely with temperature. Thus, the color provides a direct indication of the star's thermal characteristics.
A change in color
The color of the star Indicates its Temperature.