KIDS TRIVIA

Detailed explanation-1: -Red dwarfs are considered the smallest star known that are active fusion stars, and are the smallest stars possible that is not a brown dwarf. This star has a size comparable to that of Saturn. Lowest mass main sequence star as in 2020.

Detailed explanation-2: -A star’s spectral class also indicates its color. O-, B-, and A-type stars appear blue to bluish white to white. F-and G-type stars give off faint to rich yellow hues, while K-and M-type stars appear orange to red-orange.

Detailed explanation-3: -That O stars appear blue, and M stars appear red, is a consequence of the strength of the brightness as a function of the wavelength. O stars appear blue because they put out more light at short (blue) wavelengths athan they do at long (red) wavelengths. All photons at a given wavelength have the same energy .

Detailed explanation-4: -Old stars become bloated into giants so the heat they produce and spread over a large surface area so they appear cooler and shine with a red colour much like when an electric fire element is cooling down. Very small stars don’t produce so much heat so they appear red and cooler.