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Stars of which type are the smallest in diameter?

white dwarfs

brown dwarfs

red dwarfs

neutron stars

A typical neutron star has a mass between about 1 and 2 solar masses, with a corresponding radius of just about 12 km. Some of them (pulsars), rotate as quickly as once per 33-millisecond, so their radius must be very small not to break the light speed limit at the surface level.

Hà Linh Chi

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Answers by country

France

14%

4%

0%

80%

21

the Netherlands

14%

0%

14%

71%

21

Sweden

20%

0%

6%

66%

15

the United Kingdom

24%

7%

9%

57%

229

Poland

24%

7%

13%

54%

10921

the United Arab Emirates

28%

9%

0%

52%

21

Germany

26%

7%

12%

51%

733

Canada

27%

11%

7%

51%

54

Austria

18%

11%

19%

48%

104

Switzerland

31%

7%

11%

47%

70

India

28%

11%

12%

46%

673

Indonesia

38%

0%

15%

46%

13

the United States

29%

13%

12%

43%

648

Pakistan

29%

17%

9%

43%

41

Greece

41%

5%

11%

41%

17

Unknown

21%

18%

18%

40%

37

the Philippines

34%

12%

12%

39%

66

Australia

36%

7%

19%

36%

68

South Africa

27%

5%

22%

33%

18

Republic of Ireland

39%

8%

21%

30%

23

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

Kemble's cascade

What is the densest substance in the universe?

core of the Sun

Which direction was the camera pointing at while taking this picture?

Which of these terms is an acronym?

all of the above