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They can be the same sort of star, it's just that the one moving quickly away from us LOOKS red BECAUSE it is moving away, while the one moving quickly toward us appears blue because it is moving toward us. This is caused by a physical phenomenon called a Doppler Shift.
Edit: That's a special case, but I don't think that's what the question is about.
In fact I'm not sure what the question is about exactly. It's one or those annoyingly vague questions.
What else can I help you with?
Are blue giants and red dwarfs alike?
Blue giants and red dwarfs are both types of stars, but they are quite different. Blue giants are massive and hot stars that shine brightly, while red dwarfs are smaller, cooler stars that emit a fainter light. Blue giants are more short-lived and evolve faster compared to red dwarfs, which have much longer lifespans.
Which is hotter a blue star or a red star and why?
A blue star is hotter than a red star. The color of a star indicates its surface temperature, with blue stars having temperatures exceeding 10,000 degrees Celsius, while red stars typically have temperatures around 2,500 to 3,500 degrees Celsius. The higher energy output and temperature of blue stars result from their larger mass and more intense nuclear fusion processes occurring in their cores.
The color of the star can be indication of the?
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.
What color is the star auva?
It's a red giant, so I guess it is red or orange.
What happens to the temp of stars as a star changes blue to red?
As a star changes from blue to red, its temperature decreases. Blue stars are hotter and emit more energy in the blue and ultraviolet regions of the spectrum, while red stars are cooler and emit more energy in the red and infrared regions. This change in temperature is due to the evolution of the star and its eventual depletion of fuel.
What can be said about a red star and a blue star?
A red star is cool whereas a blue star is hot.
Is the blue or red star hot?
The blue star is the hottest star.
What can be said with certainty about a red star and a blue star?
A red star is cooler and has a lower temperature compared to a blue star, which is hotter. Red stars are typically older, while blue stars are younger. The color of a star is determined by its surface temperature, so these differences in characteristics between red and blue stars are consistent.
What star has a higher surface temperature blue star or a red star?
Blue.
Is a blue star smaller than a red star?
Not necessarily. The color of a star is determined by its temperature, with blue stars being hotter than red stars. Size can vary independently of temperature, so a blue star can be larger or smaller than a red star.
What color star is hotter a red star of a blue star?
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.
Suppose you see two stars a blue star and a red star what can you conclude about the two stars?
The color of a star is influenced by its temperature, with blue stars being hotter than red stars. Therefore, you could conclude that the blue star is hotter than the red star. Additionally, blue stars typically have shorter lifespans than red stars.
Is an O star blue or red?
A star with a spectral class of O is classified as a Blue Star. A red star will have a spectral class of M See related question
A white blue star is hotter than a red stra?
The blue star is the hottest.
How are Barnard's star and Antares alike?
Barnard's Star and Antares are both red dwarf stars. However, Antares is a red supergiant star that is much larger and brighter than Barnard's Star. Both are part of the Milky Way galaxy and can be seen from Earth with the naked eye.
Which star is the brightest red or blue why?
The brightest stars are typically blue because they are hotter and emit more light compared to red stars. Blue stars have higher surface temperatures, which causes them to shine brighter than red stars.
What are the colors of Rigel and Betelgeuse?
Rigel is a blue-white star, while Betelgeuse is a red supergiant star.
