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