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Effects of Microgravity-Induced Weightlessness on Aurelia Ephyra Differentiation and Statolith Synthesis (DCL_SLS_1)
Principal Investigator
Research Area:
Developmental biology
Species Studied
Scientific Name: Aurelia Species: Jellyfish


Aurelia polyps and ephyrae were exposed to microgravity for nine days as part of the SLS-1 mission. This experiment was to study the effects of microgravity on: the development of ephyrae from polyps; the development of the graviceptors (rhopalia) of ephyrae; the formation or demineralization of statoliths of rhopalia; and the swimming/pulsing behavior of ephyrae.

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Spangenberg DB: Developmental studies of Aurelia (jellyfish) ephyrae which developed during the SLS-1 mission. Advan Space Res, 14(8):239-247, 1994

Spangenberg DB: Effects of microgravity on jellyfish development behavior. American Society for Gravitational and Space Biology, 6(1):100, 1992*

Spangenberg DB: Graviceptor developed in space and on earth. Advan Space Res, 14(8):317-325, 1994.

Gravity perception
Behavior, animal
Hair cells

Data Information
Data Availability
Archive is complete. All data sets are on the Web site.
Data Sets + View data.

Activity, motor, Rat, Microgravity, SLS-1 (counts)
Behavior, Locomotion
Behavior, Swimming, aurelia ephyrae, Microscopy, videotape
Count, Polyp, jellyfish, Microscopy
Count, Statolith, jellyfish, Microscopy
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
STS-40 06/05/1991 06/14/1991 9 days

Additional Information
Managing NASA Center
Ames Research Center (ARC)
Responsible NASA Representative
Ames Research Center LSDA Level 3
Project Manager: Sylvain Costes
Institutional Support
National Aeronautics and Space Administration (NASA)
Alternate Experiment Name
DCL 85
Protocol / Approach
Proposal Date
Proposal Source
Dear Colleague Letter