Why are stars different colors?
#14937. Asked by ducky. (Dec 12 01 8:20 PM)
Because they burn at different temperatures. Red stars are the coolest, yellow are hotter, blue stars are the hottest of all.|
Why do stars appear to change color? |
It's due to turbulence in the atmosphere. It's just like how things look wavy
when you look over a hot grill in the summer, only on a smaller scale. An even
better analogy is that looking at stars from inside our atmosphere is like bird
watching from the bottom of a swimming pool: the ripples distort the picture.
That's one of the main reasons why space telescopes, like Hubble, provide such
In addition to contributing turbulence, the atmosphere also acts like a prism
when you look at stars near the horizon. Since the star colors get split into
a rainbow plus the turbulence makes the star move around, it can appear like
the star is changing color. See:
The colour of a star is determined by its temperature, the hottest stars are
blue and the coolest stars are red. The Sun has a surface temperature of 5,500
degrees Celsius, its colour appears yellow. See:
There ya go!!!!
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