What color is a blue star?

What color is a blue 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

What is a blue star?

: a star of special type O or B having a high surface temperature and a bluish white color (such as Rigel)

Why do blue stars appear blue?

The colour of a star is primarily a function of its effective temperature. Hot stars appear blue because most energy is emitted in the bluer parts of the spectrum. There is little emission in the blue parts of the spectrum for cool stars – they appear red.

What is the bright blue star in the sky?

Rigel is a blue supergiant that is the brightest star in the constellation Orion (the Hunter).

Are blue stars brighter?

Blue stars tend to be the brightest, and red stars the dimmest. It should be remembered that, when observing from the Earth, the stars are at different distances. Thus, a red star that shines faintly but is very close will appear to shine more brightly than a blue star that is much further away.

Which star is the coldest?

M stars
M stars are the coldest stars and O stars are the hottest. The full system contains other types that are hard to find: W, R, N, and S. The closest star to the Earth, the sun, is a class G star.

Who can fly a blue star flag?

The flag or banner is officially defined as a white field with a red border, with a blue star for each family member serving in the Armed Forces of the United States during any period of war or hostilities.

What is a white star?

1 : a star of spectral type A or F having a moderate surface temperature and a white or yellowish color. 2a : an annual morning glory (Ipomoea lacunosa) of the southern U.S. with star-shaped leaves and small white or purplish flowers.

Which star is the bluest?

Spica: The Brightest, Bluest Star in the Sky.

What is known as the largest star?

The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun. And it’s not alone in dwarfing Earth’s dominant star.

Is blue star hotter than Sun?

Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all. Many stars are bigger and hotter than the sun.