#PhysicsFactlet
Cold stars look red. Hot stars look blue. But there is no green star.
To be more precise: stars emit a very broad and temperature-dependent spectrum , so intermediate temperature stars excite in roughly equal measure all 3 of the color receptors in our eyes.
There are green galaxies, but that is a story for another time 😉
Cold stars look red,
hot stars look blue.
There is no green star,
but ...
stars emit a very broad and temperature-dependent spectrum , so intermediate temperature stars excite in roughly equal measure all 3 of the color receptors in our eyes.
