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DAAC
Distributed Active Archive Center
DAP
Data Analysis Program
CDAP
DDAP
Cassini Data Analysis Program
Discovery Data Analysis Program

Data Analysis Program associated with a mission. There are many variants e.g., CDAP (Cassini Data Analysis Program), DDAP (Discovery Data Analysis Program), etc.

dark matter
Nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects.


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dewar
Dewar
dewars
Dewars
A glass or metal container made like a vacuum bottle that is used especially for storing liquefied gases.


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DoD
DOD
Department of Defense
DOE
Department of Energy
DSN
Deep Space Network
dynamical fluid

a fluid whose state is determined by conditions around it