What are the most luminous objects in the universe?
supergiant stars
novae
supernovae
quasars
A quasar is an extremely energetic source of radiation powered by accretion disc around galaxy's central supermassive black hole. Quasars were much more common in the early universe, as all known quasars are extremely distant.
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Answers by country
supergiant stars
novae
supernovae
quasars
answers
Pakistan
34
Lebanon
17
Romania
17
Unknown
36
France
26
Greece
24
the United States
544
Australia
68
Canada
50
the Philippines
53
the Netherlands
19
Malaysia
17
the United Kingdom
212
India
637
Austria
90
Poland
12633
Germany
572
Switzerland
37
South Africa
17
Republic of Ireland
19