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General astronomy
Industry: Astronomy
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General astronomy
Milky Way Galaxy
Astronomy; General astronomy
the large spiral galaxy in which our Sun and planets reside. Our Sun is one star of several hundred billion in the Milky Way.
model
Astronomy; General astronomy
an abstract construct or idea that is a simplified view of reality. It must enable you to make testable predictions of what will happen under new circumstances.
nanometer
Astronomy; General astronomy
a very tiny distance equal to one-billionth of a meter (0.000000001 meter).
natural selection
Astronomy; General astronomy
the primary mechanism of evolution by which, over time, heritable traits that enhance survival and successful reproduction will become progressively more common in succeeding generations in any local ...
neap tide
Astronomy; General astronomy
tide that has a small change between low and high tide. It occurs at first and third quarter phase, when the Moon's tidal effect is perpendicular with the Sun's tidal effect.
neutrino
Astronomy; General astronomy
a sub-atomic particle with very small mass that is produced in nuclear fusion reactions and rarely interacts with ordinary matter. Neutrinos travel at the nearly the speed of light and provide ...
neutron
Astronomy; General astronomy
subatomic particle with zero charge (neutral charge) that is found in the nucleus of an atom. It is slightly more massive than the positively-charged proton.
