⚙️ how
How do astronomers measure the temperature of a star?
SpaceStars
Quick Answer
They compare the star’s color and spectrum to known physics. Hotter stars peak at shorter wavelengths, while cooler stars peak at longer wavelengths.
The Full Story
A star’s color is linked to its surface temperature through blackbody radiation. Blue-white stars are hotter than yellow stars like the Sun, and red stars are cooler. Spectral lines provide more precise temperature estimates because line strengths depend on ionization and atomic conditions in the star’s atmosphere. This is why astronomers can classify stars into types such as O, B, A, F, G, K, and M.
Key Facts
1.The Sun is a G-type star
2.Hotter stars emit more blue and ultraviolet light
3.The OBAFGKM sequence is a common classification
YouTube Angle
Suggested video title for this topic:
"How a star’s color gives away its heat"