What object collided with Earth according to giant impact hypothesis?

a comet
a moon
an asteroid
a planet
Ac­cord­ing to the giant impact hy­poth­e­sis Earth once collided with a planet of Mars size usually referred to as Theia, a titaness of Greek mythol­o­gy, mother of Selene - Moon goddess, which is to reflect the believe the col­li­sion was an origin of the Moon.

Answers distribution

a comet
a moon
an asteroid
a planet
answers
flagFinland
10%
10%
0%
80%
10
flagthe United Arab Emirates
0%
10%
10%
80%
10
flagGermany
8%
6%
30%
55%
83
flagthe United States
6%
8%
34%
51%
49
flagIndia
9%
11%
32%
47%
53
flagPoland
10%
8%
34%
46%
5786
flagUnknown
10%
10%
34%
44%
661
flagNorway
7%
0%
50%
42%
14
flagthe United Kingdom
10%
5%
43%
39%
116
flagSweden
15%
23%
38%
23%
13
flagthe Netherlands
23%
4%
61%
9%
21

Gender

men44%
women33%
a comet
9%
11%
a moon
9%
9%
an asteroid
35%
45%
a planet
44%
33%

Language versions

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What object collided with Earth according to giant impact hypothesis?
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Author: smyru
Illustration: Carolina Ödman
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