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Background (Baggrundsviden)
Start
Tree
Accelerating expansion of the universe (Universets accelererende udvidelse)
20.495
Age of ...
Atomic physics
18, 43, 61, 104 ...
English version
Out 01
Black hole
Chandrasekhar limit (Chandrasekhars grænsemasse)
Out 01
Cosmic background radiation
20.777
Earth (Jorden)
Precession (Præcession)
20.885
Circumference (Omkreds)
23.079
ET Starmap
Isotopes
K (Potassium/Kalium, 19)
21.920b
Pm (Promethium, 61)
Pt (Platin, 78)
Tc (Technetium, 43)
Th (thorium, 90)
21.920b
U (Uran, 92)
21.920b
Mass
Earth (Jorden)
Electron (Elektron)
Neutron
Proton
Sun (Solen)
Milky Way (Mælkevejen)
Distance
Rotation period (Sun's Galactic)
Natural Radioactivity (Den Naturlige Radioaktivitet)
21.920b
Origin of life in Universe
Parsec
Radio sky
SETI
Song of songs
SPONCH
Sun (Solen)
Distance to ...
GC (Galactic Center)
20.885
Galactic Rotation period
Background (Baggrundsviden)
18 = 61 - 43
43
61
104 = 43 + 61
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