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What is an astronomical unit (AU)?

the distance of the Moon from Earth
the distance of the Earth from the Sun
the distance of the Moon to the Sun
None of the above
The astronomical unit (AU) represents the mean distance between the Earth and our sun. An AU is approximately 93 million miles (150 million km). It’s approximately 8 light-minutes.
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Answers by country

the distance of the Moon from Earth
the distance of the Earth from the Sun
the distance of the Moon to the Sun
None of the above
answers
flagthe Netherlands
6%
87%
6%
0%
16
flagFrance
8%
83%
0%
8%
12
flagGermany
9%
82%
3%
3%
52
flagthe United States
14%
70%
5%
8%
118
flagthe United Kingdom
9%
69%
9%
10%
65
flagIndia
11%
68%
6%
12%
181
flagPoland
16%
60%
5%
16%
12347
flagSpain
30%
60%
0%
10%
10
flagPakistan
36%
54%
0%
0%
11
flagAustralia
17%
53%
21%
7%
28
flagGreece
21%
42%
21%
14%
14
flagAustria
40%
30%
0%
30%
10

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

Residents, whose country is called "ticos"?

Peru
Panama
Costa Rica
Portugal