Cepheid Variable Stars, Supernovae and Distance Measurement
4:15
Cepheid Variable Stars, Supernovae and Distance Measurement
Jun 22, 2019
lco.global
A star’s color is far from random it directly indicates its surface temperature. Astronomers classify stars using the sequence O, B, A, F, G, K, and M, spanning from the hottest, brilliant blue stars to the coolest, deep red ones. Blue O-type stars are extreme, burning at over 33,000 kelvin, while white and yellow stars sit in the middle of the scale. Our Sun, a G-type star, glows yellow at roughly 5,800 kelvin, placing it between the hottest and coolest stars in the galaxy. Red M-type stars are
0:04
A star’s color is far from random it directly indicates its surface temperature. Astronomers classify stars using the sequence O, B, A, F, G, K, and M, spanning from the hottest, brilliant blue stars to the coolest, deep red ones. Blue O-type stars are extreme, burning at over 33,000 kelvin, while white and yellow stars sit in the middle of the scale. Our Sun, a G-type star, glows yellow at roughly 5,800 kelvin, placing it between the hottest and coolest stars in the galaxy. Red M-type stars are
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