February 2023
How to grow plants in a spacecraft
... with stringent resistive exercise countermeasures. Astronauts have also been shown to suffer from nutritional deficiencies in potassium, calcium, vitamin D and vitamin K because food supplied does not allow them to meet the daily intake requirements...
October 2024
Off-Earth risks to the human skeleton
... level: this includes osteocitic osteolysis, collagen-crystal uncoupling, slowing down of osteoblastic histogenesis, reducing calcium intestinal absorption and kidney reabsorption, and osteoclastic resorption activation. One might perceive the...
23 March 2016
Could an encounter with a passing dark molecular cloud be responsible for killing off the dinosaurs?
... continental crust. In addition, the oxygen isotope ratios correspond to the demise of planktonic and benthic foraminifera whose calcium carbonate shells settle along the ocean floor to form a sediment layer rich in δ18O (delta-18-O). The team...
20 January 2020
ESA facility begins producing oxygen out of simulated moon dust
... rock is still in its solid state; The rock, or in this case moondust, is placed in a metal basket with molten calcium chloride salt to serve as an electrolyte – a chemical compound that is capable of transporting electric charge – and heated to 950...
03 April 2020
Newly discovered organisms in ancient solid rock inspire new search for life
... up with iron-rich smectite; a type of clay mineral that contains iron and magnesium as well as either sodium or calcium and is the same clay used to make pottery. As might be expected, finding signs of ancient, tiny microbes in rocks...
18 August 2021
New study sheds light on Solar System heavy metal problem
... ray when it decays, was piqued back in the 70s when scientists examining meteorites found the isotope in calcium-aluminum-rich inclusions contained in these ancient rocks. After concluding that they were pristine remnants of the...
