This region is home to permanently shadowed craters—such as the massive, 21-kilometer-wide Shackleton crater—where extreme cold and steep, unstable slopes render conventional planetary rovers prone to losing traction or tipping over. By adopting a...

to their predictable peak luminosity, which allows researchers to map distances across the cosmos. In the standard Lambda cold dark matter (ΛCDM) model, dark energy is defined by the cosmological constant—a value that remains fixed as the universe...

adoption of metallurgy by millennia. During this period, artisans in Anatolia and northern Mesopotamia relied on hot and cold hammering techniques to shape metal, turning raw ore into functional tools and decorative items. The presence of this complete...

a vast temperature gradient. The hottest samples soar to roughly 4,000 degrees Fahrenheit (2,200 degrees Celsius), while the coldest hover near minus 10 degrees Fahrenheit (minus 20 degrees Celsius). This spectrum allows scientists to observe how...

have uncovered a chemical signature that challenges existing models of how organic material accumulates in cold, dense clouds before evolving into planetary systems. A Breakthrough Detection via ALMA The identification was made as part of the ALMA...

Journal Testing Cosmological Models Confirming the existence of such galaxies serves as a vital stress test for the Lambda Cold Dark Matter (Lambda-CDM) model. While current computer simulations have long predicted the existence of “backsplash”...

spring. Credit: ldpetphotography Resilience in the Face of Adversity Despite the high mortality rates during extreme cold, these species show a remarkable capacity for recovery. In the breeding season following the 2010 winter crash, robin productivity...

age in the early universe. The existence of such a behemoth challenges the standard cosmological model, which posits that cold dark matter drives the assembly of galaxies and clusters through gravity. Because dark matter is “cold,” its particles possess...

barrier, researchers increasingly study cosmic-ray-boosted dark matter, a scenario where energetic cosmic rays collide with cold galactic dark matter and propel it to relativistic velocities. When these boosted particles stream toward Earth, they...

Decades-old Soviet nuclear submarine continues leaking, and fresh data indicate its internal contents may now be slowly degrading. In 2019 a remotely operated vehicle named Ægir 6000 descended into the Norwegian Sea to inspect the wreck of the Soviet...

Struggle for existence may be of different types. It may be a Struggle to overcome adverse environmental conditions (like cold or drought), or to obtain food from a limited source of supply. It may be a fight for occupying a living pace, or even to...

potent ABO antibodies with bound complement interfering with agglutination. Causes of False-positive Test Rouleaux formation Cold-reactive antibodies: If agglutination disappears by keeping the tube at 37°C for 10 minutes, presence of cold agglutinins...

of other diseases such as nephrotic syndrome, glomerulonephritis, multiple myeloma, and pre-eclampsia. Exposure to cold, strenuous exercise, high fever, and dehydration can also cause the presence of protein in the urine. The protein pad is most...

skin can widen, a process known as vasodilation, dispersing heat and cooling the body down. Conversely, if the body is too cold, these blood vessels can constrict, reducing blood flow and conserving heat. The circulatory system also helps to maintain...

are products of complement activation, various drugs like codeine and morphine, and certain physical agents such as heat, cold, and pressure. The activation of mast cells, brought about by the bridging of their receptors, results in three distinct types...

of primary hypothyroidism include lethargy, mild depression, menstrual irregularities, weight gain, intolerance to cold, dry skin, myopathy, constipation, and a firm and lobulated thyroid gland, a characteristic feature of Hashimoto’s thyroiditis. In...

plasma. Blood is drawn into a chilled plastic test tube that contains either EDTA or heparin, and it is then placed in cold ice-water. The sample is centrifuged at 4º C, after which the plasma is separated and immediately stored at -20º C within 15...

contaminated water. Notably resistant to chlorine levels typically found in tap water, Giardia is commonly present in cold mountain streams. Giardiasis, the infection caused by Giardia, frequently affects individuals who camp or spend time outdoors,...

since certain fastidious organisms, such as Haemophilus influenzae and Neisseria meningitidis, do not survive in cold temperatures. CSF chemical examination results should always be compared with plasma levels, as changes in plasma are reflected in CSF....

site and the smaller sample size, which limits the possibility of repeat testing. Blood should not be collected from cold, cyanosed skin, as this may lead to falsely elevated values for red blood cells, white blood cells, and hemoglobin. Venous Blood...