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Until
very
recently,
planetary
scientists
had
thought
that
Mars
is
a
cold,
dry
planet.
Then
in
the
summer
of
2000,
NASA
released
images
from
the
Mars
Global
Surveyor
showing
evidence
of
very
recent
seepage
of
ground
water
from
crater
and
valley
slopes
in
the
planet's
southern
hemisphere.
It
seems
that
substantial
reservoirs
of
the
water
that
once
may
have
run
so
copiously
on
the
surface
may
still
...
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This article describes how astronomers from the European Space Agency (ESA) have discovered thermal emission lines from interstellar water vapor using the spectrometers aboard ESA's Infrared Space Observatory (ISO).
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NASA
and
Russian
scientists
have
been
selected
to
take
the
search
for
life
in
the
solar
system
to
the
frozen
reaches
of
Earth.
Life
forms
(from
diatoms
and
bacteria
to
mammoths)
preserved
in
the
Siberian
permafrost
can
yield
evidence
about
how
life
has
changed
on
the
molecular
level
and
provide
a
treasure
trove
of
ancient
enzymes,
proteins,
and
biochemicals.
The
ecosystems
of
the
ice
and
permafrost
...
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This article discusses the necessity of locating water ice as astronauts explore the solar system, for oxygen and fuel as well as for drinking. Topics include the possible occurrence of ice at the lunar poles and in comets, and some of the National Aeronautics and Space Administration (NASA) missions to locate it.
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This site provides a discussion of the downward movement, or infiltration, of water from the surface into soil or porous rock. Graphics illustrate the processes affecting infiltration, including precipitation, soil characteristics and saturation, land cover, slope, and evapotranspiration. Links to additional sources of information are also provided.
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This site uses Virtual Reality field trips in the Alvin submarine to the East Pacific Rise to explore hydrothermal vents. The education activites focus on 4 activities: Exploration, Observing (actual video from the seafloor), Mapping, and Collecting a Water Sample. Teaching materials for each of the explorations have been provided, each with two levels of assessment (basic and advanced).
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National Science Education Standards (NSES), National Geography Standards: Read
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This
project
examines
the
entire
water
system
of
an
ancient
city,
including
supply,
distribution,
use,
and
drainage.
Until
now,
individual
water
system
elements
have
been
studied
as
archaeological
objects,
but
infrequently
subjected
to
analysis
by
such
disciplines
as
fluids
engineering
and
urban
history.
This
work
is
part
of
two
larger
long-term
studies,
the
first
concerning
the
relationship
between
...
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This site presents clues to suggest that liquid water once flowed on Mars - raising hopes that life could have arisen there - but the evidence remains inconclusive and sometimes contradictory.
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In
this
activity,
students
construct
a
"comet"
from
ingredients
similar
to
those
found
in
actual
comets.
They
will
learn
about
the
behavior
of
a
real
comet
by
observing
their
model
as
the
dry
ice
sublimates,
and
understand
the
concept
of
scale
as
they
compare
the
size
of
their
model
to
the
size
of
a
real
comet.
A
list
of
materials
and
instructions
are
provided.
This
activity
can
be
performed
as
a
...
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NOAA's
Paleoclimatology
Program
is
working
with
scientists
from
around
the
world
to
study
past
climate
in
hopes
of
achieving
a
better
understanding
of
the
Earth's
present
and
future
climate.
This
site
was
developed
to
help
educate,
inform
and
highlight
the
importance
of
paleoclimate
research;
as
well
as
to
show
how
paleoclimate
research
relates
to
global
warming
and
other
important
issues
of
climate
...
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Comments and Teaching Tips
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