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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Stars quiz Astronomy quiz Nature quiz

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Answers by country

Greece

14%

71%

the United States

63%

25%

203

the Netherlands

13%

63%

13%

France

12%

62%

25%

the Philippines

57%

32%

Australia

52%

41%

India

19%

50%

23%

301

Austria

15%

50%

28%

Pakistan

20%

48%

24%

the United Kingdom

13%

41%

35%

120

Canada

40%

53%

Switzerland

16%

39%

35%

Germany

18%

38%

34%

496

Belarus

33%

38%

23%

Russia

16%

37%

40%

130

Ukraine

20%

11%

36%

31%

183

Poland

17%

35%

36%

5079

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"?