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This site allows users to study maps and read a description about the Wilkinson Microwave Anisotropy Probe (WMAP), which has made a new determination of the age of the universe and collected data on the oldest light in the universe, microwave "light" captured from 379,000 years after the Big Bang.
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This science brief introduces OMNIWeb, an internet-based data retrieval and analysis interface for near-Earth solar and geomagnetic data. A summary of solar and heliospheric physics, including basic terms, is also provided.
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This
is
the
table
of
contents
listing
for
the
NASA
booklet
"Shedding
a
New
Light
on
the
Universe".
Each
item
in
the
table
is
a
link
to
a
specific
topic.
Topics
include
such
items
as
the
electromagnetic
spectrum,
frequency,
wavelength,
and
energy
activity,
the
multiwavelength
Milky
Way,
the
Crab
Nebula
in
different
energies,
spectroscopy,
satellites
and
their
parts,
and
the
Rossi
X-ray
Timing
Explorer
...
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This document describes the features and properties of Earth's magnetosphere. Topics include the magnetosphere's shape, descriptions of its features, the Van Allen Belts, particle motions, and magnetic storms. Links to illustrations and tables are embedded on the text.
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This educational brief provides an overview of the concepts of radioactivity, basic particle physics, and the use of radioactive decay as a mechanism to date our galaxy.
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Growth
in
"mega-cities"
is
altering
the
landscape
and
the
atmosphere
in
such
a
way
as
to
curtail
normal
photosynthesis.
By
using
data
from
The
Defense
Meteorological
Satellite
Program's
Operational
Linescan
System,
researchers
have
been
able
to
look
at
urban
sprawl
by
monitoring
the
emission
of
light
from
cities
at
night.
By
overlaying
these
"light
maps"
onto
other
data
such
as
soil
and
vegetation
...
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Students can put their weights into this calculation tool and see how much more or less they would weigh on the other planets, moons, our sun, and other types of stars. The tool is accompanied by discussions of mass, weight, gravity , and distance. Clicking on the images of the planets links the user to additional information for each one.
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This
is
the
home
page
for
a
set
of
articles
on
the
Earth's
magnetosphere
and
other
phenomena
related
to
charged
particles
and
magnetic
fields.
This
page
features
an
index
consisting
of
summary
files
on
such
topics
as
magnetism,
electrons,
ions,
plasmas,
radiation
belts,
the
sun
and
solar
wind,
the
magnetosphere,
and
auroras.
Following
the
summaries
are
links
to
detailed
articles
on
each
topic.
Each
...
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This educational brief provides a description of the use of spectroscopy to identify elements in the stars, including a scientific explanation of bright line and dark line spectra, from an historical perspective. A list of links to additional information and images of atomic spectra is also provided.
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This site presents graphic plots of solar wind and magnetic field data from the Advanced Composition Explorer (ACE) spacecraft.
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