Recent research in the field of water-calcium metabolism in spaceflight conditions
Exposure to altered gravity during spaceflight can cause physiological changes. One such change is the inability to completely empty the bladder or urinary retention. Exposure to microgravity causes bone atrophy/loss, which increases blood calcium levels and increases the risk of kidney stones. The results of this new study may shed light on age-related bone loss, which affects millions of people on Earth.
Mars rover Perseverance finds interesting rock that may have harbored microbial life billions of years ago
Analysis by instruments on board the rover shows that the rock has qualities that meet the definition of a possible indicator of ancient life. The rock contains chemical signatures and structures that could have been formed by life billions of years ago, when there was flowing water in the area the rover was exploring. The science team is considering other explanations for the observed features, and further research will be needed to determine whether ancient life is a valid explanation.