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How many planets does the Solar System consist of?

seven
eight
nine
173
These are Mercury, the Venus, the Earth, Mars, the Jupiter, the Saturn, the Uranus and the Neptune. The Pluto is excluded from the list since 2006, and it is classified as one of dwarf planets (not even the largest of them).
Paweł Kołodziejczyk
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Correct this question
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Very interesting!
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Answers by country

seven
eight
nine
173
answers
flagPakistan
1%
87%
8%
0%
56
flagIndia
4%
83%
9%
0%
874
flagAustria
5%
82%
11%
0%
117
flagthe United Arab Emirates
12%
81%
6%
0%
33
flagRepublic of Ireland
16%
80%
4%
0%
25
flagGermany
6%
76%
13%
1%
828
flagSwitzerland
6%
76%
16%
0%
93
flagthe United States
8%
75%
10%
2%
664
flagCanada
3%
75%
19%
0%
56
flagFrance
0%
73%
20%
3%
30
flagPoland
12%
72%
12%
1%
12851
flagthe Philippines
5%
72%
13%
2%
111
flagthe United Kingdom
9%
69%
15%
2%
269
flagUnknown
16%
67%
10%
5%
37
flagBelarus
9%
67%
19%
0%
31
flagUkraine
11%
65%
17%
4%
159
flagthe Netherlands
12%
65%
21%
0%
32
flagRussia
8%
64%
19%
3%
173
flagAustralia
12%
64%
14%
7%
81
flagGreece
14%
47%
33%
4%
21

This is the aurora of Jupiter. What are the visible bright spots caused by?

volcanic peaks
atmospheric storms
Jupiter moons
multiple magnetic poles of Jupiter

Who first described the heliocentric model of the Sun and planets? ( with the Sun in the center)

Nicolaus Copernicus
Claudius Ptolemy
Aristarchus of Samos
Isaak Newton

Which of Saturn's moons has such distinctive equatorial ridge?

Dione
Rhea
Enceladus
Iapetus

Which of the following is not an allotropic variety of coal?

diamond
graphite
fullerene
anthracite