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How many percent of the total mass of the sun is gas?

79,8
89,9
99,8
100
By far most of the solar system's mass is in the Sun itself: somewhere between 99.8 and 99.9 percent. The rest is split between the planets and their satellites, and the comets and asteroids and the dust and gas surrounding our star.
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Answers by country

79,8
89,9
99,8
100
answers
flagthe Netherlands
0%
0%
100%
0%
15
flagGermany
2%
8%
80%
6%
46
flagRepublic of Ireland
0%
10%
80%
10%
10
flagAustria
10%
10%
70%
10%
10
flagthe United States
5%
10%
69%
14%
85
flagAustralia
9%
13%
68%
9%
22
flagPoland
8%
19%
57%
15%
3310
flagIndia
12%
21%
49%
17%
108
flagGreece
0%
45%
45%
9%
11
flagthe United Kingdom
13%
13%
41%
27%
43

The bright circle around the Sun seen in the picture is known as a halo. What causes it?

refraction of light in ice crystals
refraction in the lens of the eye or lens
refraction of light in water drops
reflections from the water surface

What is larger in the sky: the Moon or the Sun? (By apparent size)

the Sun
the Moon
both are identical
sometimes the Moon, sometimes the Sun

In which month is the Earth closest to the Sun?

in January
in March
in June
there is no difference

With how many countries does Russia share a land border?

6
10
16
20