Presentation on theme: "Tardigrades In Space Cheyanne Jeffrey & Vicki-Ann Aman Co-Principal Investigators."— Presentation transcript:
Tardigrades In Space Cheyanne Jeffrey & Vicki-Ann Aman Co-Principal Investigators
What Are They? Microscopic organisms Can be found anywhere on Earth (soil, water, mold, lichen)
How much can they withstand? Temperatures as low as -200 °C and as high as 151 °C Freezing and/or thawing processes Lack of oxygen Lack of water Levels of X-ray radiation 1000x the lethal human dose; Boiling alcohol Low pressure of a vacuum High pressure (up to 6x the pressure of the deepest part of the ocean)
Cryptobiosis “A temporary state where an organism’s metabolic activities come to a reversible standstill.” In Other Words………….
Experiment: Live and Rehydrated Water Bears Vs. Microgravity Question: Is there a structural and behavioral difference when the tardigrades are in microgravity?
Hay Infusion Media with wheat grains and Spirogyra algae flamentous Live Water Bears in Water with Spirogyra algae 10-15 Water Bears in Crypto Biotic Form Around 25
The Results Are In! Space Rehydrated Water Bears -No signs of life -Strong odor -Cloudy-Exoskeletons -Lack of algae -Yellowish color -Ph level 8 Earth’s Rehydrated Water Bears -Strong odor -Cloudy -Identified less that 4 water bears -Lack of algae -Ph level 8
The Results Are In! Space’s Live Water Bears -Exoskeletons-Rotifers -Lack of algae Earth’s Live Water Bears -Ph level 7 (normal) -Same odor as rehydrated experiment -Lack of algae -Making it difficult to see -Identified less than three water bears
Conclusion What happened to the water bears? Clues: Lack of algae Type of living environment ? ? ? ? ?
Acknowledgements Financial Support: Rochester Area Community Foundation Asia Society International Studies Schools Network Other Support: Rochester Early College International High School Rochester City School District Ward’s Science (samples) University of Rochester (microscope)