Page 71 - A Chain of Miracles
P. 71
Y
a
y
h
a
H Harun Yahya
r
n
u
a
Besides the mass of
the Earth, its internal
composition is also de-
signed specifically to
support life. Because of
its inner core of iron,
Earth has a magnetic field,
which is crucial for the
preservation of life. Press and
Siever explain:
The earth's interior is a gigantic but delicately balanced heat en-
gine fueled by radioactivity …Were it running more slowly, geo-
logical activity would have proceeded at a slower pace. Iron
might not have melted and sunk to form the liquid core, and the
magnetic field would never have developed…if there had been
more radioactive fuel and a faster running engine, volcanic gas
and dust would have blotted out the Sun, the atmosphere would
have been oppressively dense, and the surface would have been
racked by daily earthquakes and volcanic explosions. 32
The magnetic field that Press and Siever describe is vital for
our survival. It is caused by the core of the Earth which is com-
posed of heavy, magnetic metals like iron and nickel. The inner
core is solid and the outer core, liquid. These two layers rotate
around one another, and their motion creates the magnetic field,
which radiates far beyond the Earth’s atmosphere and protects
the planet from the dangers of outer space. Deadly cosmic radi-
ation emitted from stars including our own Sun cannot pene-
trate this protective shield. The Van Allan belts, tens of thou-
sands of kilometers above the Earth, provide more protection
6 69
9