EXPOSE-R2 flight hardware (IMAGE) NASA/Johnson Space Center Caption EXPOSE-R2 flight hardware with dried cells of Chroococcidiopsis sp. 029 mixed with Martian regolith analog to simulate Mars-like conditions for the BIOMEX experiment on response of melanin-containing fungi to space. After exposure, the cells were returned to Earth and rehydrated for DNA sequencing. Credit Roscosmos/ESA Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.