What is the densest substance in the universe?
osmium
diamond
core of the Sun
neutron star
A neutron star is a stellar remnant of a supernova. Neutron stars are very small, but extremely dense - with a radius of only about 12–13 km (7 mi), they can have a mass of about two Suns.
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Answers by country
osmium
diamond
core of the Sun
neutron star
answers
the Netherlands
45
Australia
177
Greece
34
Canada
111
the United Kingdom
524
Austria
163
Unknown
66
Germany
1151
Poland
17181
the United States
1298
South Africa
39
Switzerland
90
Malaysia
65
Singapore
58
India
1743
Ghana
33
the United Arab Emirates
36
Pakistan
171
the Philippines
160
Nigeria
134