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

13%

63%

13%

the United States

62%

25%

195

the Philippines

57%

32%

Australia

52%

41%

India

19%

50%

23%

299

Austria

15%

50%

28%

Pakistan

20%

48%

24%

the United Kingdom

13%

41%

34%

118

Canada

40%

53%

Switzerland

16%

39%

35%

Belarus

33%

38%

23%

Germany

19%

37%

34%

486

Russia

16%

37%

40%

130

Ukraine

20%

11%

36%

31%

183

Poland

17%

34%

37%

4961

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"?