Red stars are cooler than the sun, with surface temperatures of 3,500 K for a bright red star and 2,500 K for a dark red star. The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K.
How hot can a red star get?
Typically red giant stars have surface temperatures of 3,000K — 5,000K. In contrast the surface temperature of the Sun is almost 6,000K. The cores of stars are much hotter.
Is a red star cool or hot?
Red stars are the coolest. Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all.
How hot is a red star in Celsius?
The colour of a star indicates its surface temperature. The hottest stars glow blue-white with temperatures of 30,000-40,000° Celsius. White stars are about 10,000° C, while the coolest are the red stars with temperatures of around 3000° C.
How cool is a red star?
As I mentioned above, the color of a star comes from its surface temperature. A star that emits mostly red light will have a surface temperature of about 3,500 Kelvin. Just for comparison, the Sun's surface temperature is about 6,000 Kelvin and emits yellow/white light.
How hot is a white star?
Color and Temperature
| Table 1. Example Star Colors and Corresponding Approximate Temperatures | ||
|---|---|---|
| Star Color | Approximate Temperature | Example |
| Blue | 25,000 K | Spica |
| White | 10,000 K | Vega |
| Yellow | 6000 K | Sun |
How hot is a red dwarf?
Red dwarfs are the coolest main-sequence stars, with a spectral type of M and a surface temperature of about 2,000–3,500 K.
What is a red star called?
Antares: Red Star at the End of Its Life.
How hot is Betelgeuse?
3,500 K Betelgeuse/Surface temperature