Blue stars exhibit a moderate increase in size and luminosity compared to main sequence stars of the same mass or temperature, and are hot enough to be called blue, meaning spectral class O, B, and sometimes early A. They have temperatures from around 10,000K upwards.
Some examples of blue stars include Rigel, Vega, and Sirius. Blue stars are typically hotter and more massive than other stars, giving them their distinct blue color.
Some stars ARE blue - the hotter ones.
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usually blue, but some are purple-ish like.
Red stars are cooler than blue stars
Yes, stars vary in colors based on their temperature. Hotter stars appear blue or white, while cooler stars appear red. The color of a star can give us information about its temperature and stage in its lifecycle.
No. Red stars are the coolest. Blue stars are the hottest.
The color of a star provides information about its temperature. Blue stars are hotter than yellow stars, which are hotter than red stars. This color-temperature relationship helps astronomers understand the life cycle and characteristics of stars.
Elliptical Galaxy The Elliptical Galaxy has mostly old stars and blue stars are new stars.
That they are suns. Blue looking stars are hotter than orange looking ones. You can find out more at your local astronomy museum. If you can't find information there, you probably find some information at a space shuttle.
No, blue stars are hotter than red stars. In other words, red stars are cooler. Think of it as fire. The red one is hot, but the blue flame is RAGING hot.
Red stars can be smaller or larger than blue stars as there are two types of red star. Red dwarfs are much smaller than blue stars while red giants are much larger than blue stars.