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
flagRomania
9%
0%
18%
72%
11
flagPakistan
11%
3%
23%
61%
26
flagGreece
0%
0%
46%
53%
13
flagCanada
13%
5%
27%
51%
37
flagUnknown
2%
0%
47%
50%
36
flagSwitzerland
10%
0%
40%
50%
10
flagAustralia
12%
5%
33%
48%
39
flagthe United Kingdom
7%
3%
47%
41%
125
flagMalaysia
20%
0%
40%
40%
15
flagIndonesia
30%
0%
30%
40%
10
flagthe United States
13%
4%
43%
38%
397
flagIndia
18%
4%
38%
38%
337
flagthe Philippines
30%
5%
25%
38%
39
flagAustria
15%
0%
46%
38%
13
flagGermany
10%
2%
49%
37%
85
flagPoland
8%
4%
55%
31%
10230
flagthe United Arab Emirates
7%
7%
46%
30%
13
flagSouth Africa
15%
0%
46%
30%
13
flagSingapore
10%
0%
60%
30%
10