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.
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Answers by country
white dwarfs
brown dwarfs
red dwarfs
neutron stars
answers

22

21

15

230

11011

21

745

54

73

105

673

13

657

41

17

37

66

68

18

23