Astrofisica e fisica spaziale
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
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J
J
Jacobi Karl Gustav Jacob
jansky
Jansky Karl Guthe
Janus
Jeans Sir James Hopwood
Jet Propulsion Laboratory
Jodrell Bank
Julian Date
Julian Day Number
Julian Ephemeris Date
1