The colour of the star corresponds to its temperature. Which one is the hottest?

red

yellow

blue

white-blue

You can tell the temperature of a star by looking at its color. The coolest stars are red, then orange, then yellow. Even hotter stars are white and then the hottest stars are blue. The surface temperature of our sun is 5777 Kelvin.

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Hubble Heritage wikipedia → Stellar classification

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Answers by country

Greece

14%

71%

France

66%

26%

the Netherlands

14%

61%

14%

the United States

60%

26%

186

the Philippines

57%

32%

Australia

52%

41%

India

19%

50%

23%

298

Austria

15%

50%

28%

Pakistan

20%

48%

24%

Canada

40%

53%

the United Kingdom

14%

39%

35%

113

Switzerland

16%

38%

35%

Belarus

33%

38%

23%

Russia

17%

37%

39%

129

Germany

19%

36%

35%

476

Ukraine

20%

11%

36%

31%

183

Poland

17%

34%

37%

4941

Republic of Ireland

23%

30%

46%

Kazakhstan

34%

15%

46%

Spain

15%

76%

Which astronomical discovery was nicknamed 'Little Green Man'?

This is the aurora of Jupiter. What are the visible bright spots caused by?

volcanic peaks

atmospheric storms

Jupiter moons

multiple magnetic poles of Jupiter

This unique line of about 20 stars is known as ...

Whose quotations are contained in the famous "Little Red Book"?