• General Observer (GO) Programs: Observations and archival research proposed by the community and selected by peer review.
• Joint Observing Programs: JWST programs using multiple observatories.
• Director's Discretionary Time (DDT): Time-critical observations that cannot be scheduled for a regular proposal cycle.
• Calibration Programs: Observations used to calibrate the science instruments in support of all the other science programs.
• Director’s Discretionary Early Release Science (DD-ERS) Programs: Observations to be executed within the first five months of science operations and immediately released to the community. 
• Guaranteed Time Observations (GTO) Programs: Observations defined by members of the instrument and telescope science teams, as well as a number of interdisciplinary scientists. 
• First Image Observations: The first observations following commissioning to demonstrate the observatory's capabilities.

Cycle 4 Programs

• GO Cycle 4

  

• Joint

  

• DDT

  

• Calibration

  

All Cycles

The table below lists the programs in all JWST proposal cycles to date.