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Mercury:
A
Strange
and
Enigmatic
World The
planet
Mercury
is
the
closest
planet
to
the
sun
and
one
of
the
most
mysterious
and
enigmatic
worlds
in
our
solar
system.
Named
after
the
Roman
messenger
god,
Mercury
is
a
small,
rocky
planet
with
a
diameter
of
just
4,880
kilometers,
making
it
slightly
larger
than
Earth's
moon.
Mercury's
bold
red
and
yellow
surface
is
covered
with
craters,
mountains,
and
vast
plains
of
smooth
terrain.
Because
of
its
proximity
to
the
sun,
the
planet's
surface
is
hot
enough
to
melt
lead
during
the
day,
while
the
temperature
drops
to
a
frigid
-180
°C
at
night. Mercury's
strange
and
unusual
behavior
has
puzzled
astronomers
for
decades.
The
planet
rotates
just
once
every
59
Earth
days,
meaning
that
a
day
on
Mercury
is
almost
two
of
its
years.
Additionally,
Mercury's
orbit
is
highly
elliptical,
causing
its
distance
from
the
sun
to
vary
greatly
between
its
closest
approach
and
farthest
retreat.
Scientists
believe
that
Mercury's
unusual
behavior
is
due
to
the
planet's
small
size
and
close
proximity
to
the
massive
gravitational
pull
of
the
sun.
However,
deep
space
probes
such
as
Messenger
and
BepiColombo
have
provided
us
with
new
insights
into
this
strange
world.
We
now
know
that
Mercury
has
a
magnetic
field
that
is
much
stronger
than
our
moon's
and
is
produced
by
its
iron
core,
which
makes
up
more
than
70%
of
the
planet's
mass.
Despite
its
harsh
conditions,
Mercury
is
still
a
fascinating
world
that
has
captured
our
imaginations.
It
is
important
to
continue
to
study
this
planet,
as
it
holds
many
secrets
that
could
help
us
understand
the
formation
and
evolution
of
our
solar
system.