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Space Station Glossary N
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National Aeronautics and Space Administration
(NASA):
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A Federal agency formed on July 29, 1958
after President Dwight Eisenhower signed the
National Aeronautics and Space Act of 1958.
NASA coordinates space looking at efforts
as well as customary aeronautical research
functions.
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Neptune:
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The eighth planet and the mass distant giant
gaseous planet in our solar system. The planet
is 30 times the Earth’s reserve from
the Sun, and every orbit takes 165 Earth years.
Neptune is the fourth main planet and has
at least eight moons, the biggest of which
is Triton.
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Neutron:
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A neutral (no electric charge) elementary
atom having slightly more accumulation than
a proton and residing in the nucleus of all
atoms extra than hydrogen.
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Neutron Star:
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Neutron stars are very dense: they are only
10 kilometers or so in size, but have the
mass of an standard star (usually about 1.5
times more massive than our Sun). A neutron
star that frequently emits pulses of radiation
is known as a pulsar.
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Nova:
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A binary star system (consisting of a white
dwarf and a companion star) that rapidly brightens,
then gradually fades back to normal.
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