Because they are hotter.
Imagine heating a rod of iron. It starts off black, then goes to red, orange, then yellow. Heat it some more and it turns white, and then blue - it would probably be melting by that point, but you get the picture.
Blue straggler stars in globular clusters are believed to be examples of mergers. These stars are thought to form from the merging of two smaller stars or from the collision and merger of two stars in a binary system, leading to them appearing brighter and bluer than other stars in the cluster.
Red stars are cooler than stars of other colors but are still quite hot, which is why the glow red.
Large cool stars are classified as either K or M type stars on the spectral classification scale, with M stars being cooler and redder than K stars. These stars are part of the main sequence on the Hertzsprung-Russell diagram and have surface temperatures lower than 5,000 K.
The visible spectrum, as it goes from red to blue, refects higher energies and shorter wavelengths, that are produced by progressively higher temperatures. So, bluish stars are hotter than reddish stars.
It depends on the stars wave-lengths for most of it. Stars that are cool (for stars at least- measured in kelvin) normally radiate there energy in the electromagnetic spectrum as red. Even though all stars in the sky appear to be white. Hot stars radiate much larger wave lengths, causing an almost blue color to be emitted. The only way for us to know how hot a star is... is finding where it's wavelengths are at there "peek". Wave lengths are NOT visible to the human eye.
Bluer Than Blue was created in 1978.
Bluer that blue
Blue straggler stars in globular clusters are believed to be examples of mergers. These stars are thought to form from the merging of two smaller stars or from the collision and merger of two stars in a binary system, leading to them appearing brighter and bluer than other stars in the cluster.
yes
It simply means "bluer than the blue of your eyes"
moon is too nearer to earth than stars
Red stars are cooler than stars of other colors but are still quite hot, which is why the glow red.
Large cool stars are classified as either K or M type stars on the spectral classification scale, with M stars being cooler and redder than K stars. These stars are part of the main sequence on the Hertzsprung-Russell diagram and have surface temperatures lower than 5,000 K.
Hot stars are more massive than cooler stars and thus use up their available fuel much more quickly.
Yes, in fact it is. Bluer is the comparative form of the adjective blue. The superlative form of course is bluest. See examples below of how the three might be used:Mary has blue eyes.Mary has bluer eyes than Kayla.Mary has the bluest eyes I have ever seen.
Stars look so tiny because they are really really far away.
Positive ............ blue - The sky is blue Comparative ..... bluer - Today the sky is bluer than it was yesterday Superlative ....... bluest - That is the bluest sky I have ever seen