Formation

This story is part of CBC Health's Second Opinion, a weekly analysis of health and medical science news emailed to subscribers on Saturday mornings. If you haven't subscribed yet, you can do that by clicking here.Shift workers sleeping at erratic hours. Students pulling all-nighters. Menopausal women tossing and turning in bed from hot flashes.There are a host of reasons why people have periods of poor sleep. And anyone who's endured back-to-back nights of sub-par slumber likely knows the result: Feelings of brain fog,…

NASA’s Spitzer Telescope’s 2008 discovery of a unique protoplanetary disk around SZ Cha, with unusual ultraviolet radiation, was contradicted by the James Webb Telescope’s later findings of typical radiation levels. These conflicting observations, particularly the differing neon signatures, suggest a significant and previously unobserved change in the disk’s radiation exposure. This challenges current models of planet formation and necessitates further research.The contrast between the James Webb Space Telescope’s…

Graphical abstract. Credit: Environmental Science & Technology (2023). DOI: 10.1021/acs.est.3c05645 School of Earth and Atmospheric Sciences researchers find dangerous sulfates are formed, and their particles get bigger, within the plumes of pollution belching from coal-fired power plants Previous studies have found that the…

According to an analysis of meteorite data, the instability of the giant planets took place between 60…

James Webb Space Telescope (JWST) captured a new image of the HH212 star's…

A study from Caltech revealed that the early Earth was formed from hot and dry materials, indicating water’s late arrival during Earth’s formation. This study utilized magmas from different layers of the Earth’s interior, providing unique insights into the planet’s formation.A new study from Caltech suggests the early Earth formed from hot, dry materials, implying water arrived late in Earth’s formation. The research, offering clues from different mantle layers, posits major additions of volatiles only happened during…

Layers of sedimentary rock are often studied to recreate Earth's history. But rocks aren't always the most reliable historians. New research shows that environmental conditions can substantially affect how—and how fast—sediment accumulates, misleading scientists who are trying to estimate the lengths of time periods in Earth's past. Barefoot et al. studied sedimentation rates and patterns by mimicking a natural…

Various tectonic settings for the formation of the major Pb deposits. There are three main Pb deposit types: volcanogenic massive sulfide ore deposits (VMS) commonly associated with black smokers and oceanic spreading environments, sedimentary exhalative ore deposits (SEDEX) and Mississippi Valley-type ore deposits (MVT) (Andrieu et al., 1998; Fouquet and Marcoux, 1995; Heinrich and Candela, 2014; LeHuray et al., 1988; Verati et al., 1999; Wilkinson,…

A team of scientists used microwave frequency data to measure heat below the surface of a suspected volcanic feature on the Moon known as Compton-Belkovich. Credit: NatureMicrowave frequency data from lunar orbiter reveals deposit of cooled magma beneath a volcano that likely erupted 3.5 billion years ago.Scientists have discovered a large granite formation beneath the Moon’s surface, pointing to ancient volcanic activity and challenging existing theories about the lunar crust’s formation. The presence of granite, a rock…

A new study suggests that the formation of mountains, particularly in subduction zones like southern Italy, might be significantly influenced by the descension of a tectonic plate through Earth’s mantle and its alteration of mantle flow, contrary to the traditional belief of crust crumpling and thickening, offering a more nuanced understanding of mountain building process.New research led by Colorado State University indicates the answers to how and why mountains form are buried deeper than once thought.“Mountain building…