Microbes that survive transport to and in the stratosphere endure extremes of low temperature, atmospheric pressure, and relative humidity, as well as high fluxes in ultraviolet radiation (UVR).
Mars Sample Return Program planning includes a series of spacecraft staged both on the Martian surface and in low-Mars-orbit (LMO).
How microbial communities respond to extreme conditions in the stratosphere remains unclear.
Veryovkina Cave is the world’s deepest known cave (2212 m deep). It is located in the Arabika Massif of Gagra Mountain in the Western Caucasus. Its microbiome remains unknown because […]
Cells of Serratia liquefaciens were grown on trypticase soy agar (TSA) for 28 d under Martian conditions of 7 mbar, 0°C, and CO2-enriched anoxic atmospheres (called Mars low-PTA conditions).
![Recurring slope lineae on Mars’s surface. (a) RSL at a crater on the floor of Valles Marineris, near the Martian equator, captured by the HiRISE (High Resolution Imaging Science Experiment). NASA/JPL-Caltech/Univ. of Arizona. (b) Deliquescence process of perchlorates. On Mars, salts such as calcium perchlorate [Ca(ClO4)2] and magnesium perchlorate [Mg(ClO4)2] may be able to absorb water vapour from the atmosphere and dissolve into it to form aqueous brines. This process requires that relative humidity (RH) be higher than the deliquescence relative humidity of each salt (DRHs). -- Microorganisms via PubMed](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/06/Remarks-On-Life-Feasibility.png?resize=1200%2C720&ssl=1)
The current strong interest in the exploration of Mars leads to the question of the actual possibility of the presence or possible past or future development of life on the […]
Few halophilic strains have been examined in detail for their culturability and metabolic activity at subzero temperatures, within the ice matrix, over the longer term.
A Planetary Atmospheric Chamber (PAC) was used to create simulations of interplanetary conditions to test the spore survival of three Bacillus spp. exposed to interacting conditions of vacuum (VAC), simulated […]
