If we traveled to another star and it appeared red to us, What could we say about its temperature relative to the Sun?
1) A red color means an intensity peak at redder wavelengths, which is associated with hotter temperature stars.
2) It is cooler than the Sun because it peaks at bluer light, but we only see red.
3) It is hotter than the Sun because its intensity peaks at bluer light, but we only see the red.
4) A red color means an intensity peak at redder wavelengths, which is associated with cooler temperature stars.