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Categories: Biology: Evolutionary, Space: General

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Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: The Solar System
Published

Study determines the original orientations of rocks drilled on Mars      (via sciencedaily.com)     Original source 

Geologists determined the original orientation of many of the Mars bedrock samples collected by the Perseverance rover. The findings can give scientists clues to the conditions in which the rocks originally formed.

Biology: Biochemistry Biology: Biotechnology Biology: Botany Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Genetics Biology: Marine Biology: Microbiology Biology: Molecular Ecology: Sea Life Geoscience: Earth Science Geoscience: Geochemistry
Published

Convergent evolution of algal CO2-fixing organelles      (via sciencedaily.com)     Original source 

Researchers identified the proteins of a CO2-fixing organelle, namely, 'pyrenoid,' in the marine algal group Chlorarachniophyta and revealed various pyrenoid-associated proteins among algal groups, suggesting the independent evolution of pyrenoids in different algal groups.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: General Space: Structures and Features
Published

New insights on how galaxies are formed      (via sciencedaily.com)     Original source 

Astronomers can use supercomputers to simulate the formation of galaxies from the Big Bang 13.8 billion years ago to the present day. But there are a number of sources of error. An international research team has spent a hundred million computer hours over eight years trying to correct these.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

Ultraviolet radiation from massive stars shapes planetary systems      (via sciencedaily.com)     Original source 

Up to a certain point, very luminous stars can have a positive effect on the formation of planets, but from that point on the radiation they emit can cause the material in protoplanetary discs to disperse.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: The Solar System
Published

Ice shell thickness reveals water temperature on ocean worlds      (via sciencedaily.com)     Original source 

Astrobiologists have devised a novel way to determine ocean temperatures of distant worlds based on the thickness of their ice shells, effectively conducting oceanography from space.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: General Space: Structures and Features
Published

Astronomers measure heaviest black hole pair ever found      (via sciencedaily.com)     Original source 

Using archival data from the Gemini North telescope, a team of astronomers has measured the heaviest pair of supermassive black holes ever found. The merging of two supermassive black holes is a phenomenon that has long been predicted, though never observed. This massive pair gives clues as to why such an event seems so unlikely in the Universe.

Biology: Biochemistry Biology: Developmental Biology: Evolutionary Biology: General Biology: Zoology
Published

Shining a light on the effects of habituation and neural adaptation on the evolution of animal signals      (via sciencedaily.com)     Original source 

A new paper examines the possible effects of two properties of receiver playing fields documented in studies of animal psychology -- habituation and neural adaptation -- on the efficacy of mate choice signals.

Offbeat: General Offbeat: Space Space: Exploration Space: General Space: The Solar System
Published

Could fiber optic cable help scientists probe the deep layers of the moon?      (via sciencedaily.com)     Original source 

An increasing number of seismologists are using fiber optic cables to detect seismic waves on Earth -- but how would this technology fare on the Moon, and what would it tell us about the deep layers of our nearest neighbor in space?

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: Structures and Features
Published

Astronomers reveal a new link between water and planet formation      (via sciencedaily.com)     Original source 

Researchers have found water vapor in the disc around a young star exactly where planets may be forming. Water is a key ingredient for life on Earth, and is also thought to play a significant role in planet formation. Yet, until now, we had never been able to map how water is distributed in a stable, cool disc -- the type of disc that offers the most favorable conditions for planets to form around stars.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Astronomers discover heavy elements after bright gamma-ray burst from neutron star merger      (via sciencedaily.com)     Original source 

An international team of astronomers obtained observational evidence for the creation of rare heavy elements in the aftermath of a cataclysmic explosion triggered by the merger of two neutron stars.

Biology: Biochemistry Biology: Cell Biology Biology: Evolutionary Biology: General Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Nature Ecology: Research
Published

Genetic research revealed several new fern species in tropical America      (via sciencedaily.com)     Original source 

Researchers have clarified the evolutionary history of a previously poorly known group of ferns from the tropical rainforests of America using DNA methods. The study discovered many new fern species, 18 of which have now been given official names and species descriptions.

Biology: Biochemistry Biology: Cell Biology Biology: Developmental Biology: Evolutionary Biology: General Biology: Marine Biology: Molecular Biology: Zoology Ecology: Sea Life
Published

The Golgi organelle's ribbon structure is not exclusive to vertebrates, contrary to previous consensus      (via sciencedaily.com)     Original source 

Researchers report that the Golgi ribbon, an organelle structure previously thought to be exclusive to vertebrates, is also present in animal taxa, including mollusks, earthworms, and sea urchins. The function of the Golgi ribbon is still enigmatic, but its presence in diverse animal lineages indicates that its function is not vertebrate specific, as previously thought. The team also showed Golgi ribbons form at a specific timepoint during embryogenesis, which suggests that they might play a role in cell differentiation.

Biology: Biochemistry Biology: Evolutionary Biology: General Ecology: Invasive Species Ecology: Nature Environmental: Biodiversity
Published

Bottlenecks and beehives: How an invasive bee colony defied genetic expectations      (via sciencedaily.com)     Original source 

An invasive Asian honeybee colony in northern Australia has defied expectations, displaying emergent genetic variation in a short period of time. While bad news for biosecurity agencies, it could be a sign that species under pressure from climate change can be resilient.

Biology: Evolutionary Biology: General Biology: Zoology Ecology: Animals Ecology: Nature
Published

The veil varies more than the threat: Predator selection on variability in camouflage and warning signals      (via sciencedaily.com)     Original source 

Researchers leveraged open-access digital collections to validate an age-old hypothesis in evolutionary ecology. The classic hypothesis proposes that predators select for a great variety of camouflage and a limited variety of warning signals, but the idea has never been tested on natural prey.

Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

'Cosmic lighthouses' that cleared primordial fog identified with JWST      (via sciencedaily.com)     Original source 

Scientists working with data from NASA's James Webb Space Telescope (JWST) have obtained the first full spectra of some of the earliest starlight in the universe. The images provide the clearest picture yet of very low-mass, newborn galaxies, created less than a billion years after the Big Bang, and suggest the tiny galaxies are central to the cosmic origin story.

Offbeat: General Offbeat: Space Space: Exploration Space: General Space: The Solar System
Published

Biomolecules from formaldehyde on ancient Mars      (via sciencedaily.com)     Original source 

Organic materials discovered on Mars may have originated from atmospheric formaldehyde, according to new research, marking a step forward in our understanding of the possibility of past life on the Red Planet.

Biology: Biochemistry Biology: Evolutionary Biology: General Ecology: Animals Environmental: General Geoscience: Environmental Issues
Published

Butterflies mimic each other's flight behavior to avoid predators      (via sciencedaily.com)     Original source 

Researchers have shown that inedible species of butterfly that mimic each others' color patterns have also evolved similar flight behaviors to warn predators and avoid being eaten.