Glossary – D
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DAAC
Distributed Active Archive Center
DAP
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.
dewar
A glass or metal container made like a vacuum bottle that is used especially for storing liquefied gases.
DoD
Department of Defense
DOE
Department of Energy
DSN
Deep Space Network
dynamical fluid
a fluid whose state is determined by conditions around it
