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Categories: Biology: Evolutionary, Space: Astrophysics

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Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General
Published

Study quantifies satellite brightness, challenges ground-based astronomy      (via sciencedaily.com)     Original source 

The ability to have access to the Internet or use a mobile phone anywhere in the world is taken more and more for granted, but the brightness of Internet and telecommunications satellites that enable global communications networks could pose problems for ground-based astronomy. Scientists confirm that recently deployed satellites are as bright as stars seen by the unaided eye.

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

Bursts of star formation explain mysterious brightness at cosmic dawn      (via sciencedaily.com)     Original source 

In the James Webb Space Telescope’s (JWST) first images of the universe’s earliest galaxies, the young galaxies appear too bright, too massive and too mature to have formed so soon after the Big Bang. Using new simulations, a team of astrophysicists now has discovered that these galaxies likely are not so massive after all. Although a galaxy’s brightness is typically determined by its mass, the new findings suggest that less massive galaxies can glow just as brightly from irregular, brilliant bursts of star formation.

Biology: Biochemistry Biology: Evolutionary Biology: General Biology: Genetics
Published

Genetics of attraction: Mate choice in fruit flies      (via sciencedaily.com)     Original source 

Genetic quality or genetic compatibility? What do female fruit flies prioritize when mating? Researchers show that both factors are important at different stages of the reproductive process and that females use targeted strategies to optimize the fitness of their offspring.

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

Colliding neutron stars provide a new way to measure the expansion of the Universe      (via sciencedaily.com)     Original source 

In recent years, astronomy has seen itself in a bit of crisis: Although we know that the Universe expands, and although we know approximately how fast, the two primary ways to measure this expansion do not agree. Now astrophysicists suggest a novel method which may help resolve this tension.

Biology: Biochemistry Biology: Evolutionary Biology: General Biology: Zoology Ecology: Animals Ecology: Nature Paleontology: Early Mammals and Birds
Published

Genome study reveals 30 years of Darwin's finch evolution      (via sciencedaily.com)     Original source 

An international team of researchers has released a landmark study on contemporary evolutionary change in natural populations. Their study uses one of the largest genomic datasets ever produced for animals in their natural environment, comprising nearly 4,000 Darwin's finches. The study has revealed the genetic basis of adaptation in this iconic group.

Anthropology: General Biology: Biochemistry Biology: Evolutionary Biology: General Biology: Zoology Paleontology: Fossils Paleontology: General
Published

Insights into early snake evolution through brain analysis      (via sciencedaily.com)     Original source 

Recent study sheds new light on the enigmatic early evolution of snakes by examining an unexpected source: their brains. The results emphasize the significance of studying both the soft parts of animals’ bodies and their bones for understanding how animals evolved.

Biology: Biochemistry Biology: Evolutionary Biology: General Biology: Zoology Ecology: Animals Ecology: Nature Ecology: Sea Life Environmental: Ecosystems
Published

Explosion in fish biodiversity due to genetic recycling      (via sciencedaily.com)     Original source 

The rapid formation of 500 different species of fish in a single lake, each with specialized ecological roles, resulted from a small but genetically diverse hybrid population.

Biology: Biochemistry Biology: Biotechnology Biology: Botany Biology: Evolutionary Biology: General Biology: Genetics Biology: Microbiology Ecology: Animals Ecology: Endangered Species Ecology: Invasive Species Ecology: Nature Ecology: Trees
Published

Timing plant evolution with a fast-ticking epigenetic clock      (via sciencedaily.com)     Original source 

Recent discoveries in the field of epigenetics, the study of inheritance of traits that occur without changing the DNA sequence, have shown that chronological age in mammals correlates with epigenetic changes that accumulate during the lifetime of an individual. In humans, this observation has led to the development of epigenetic clocks, which are now extensively used as biomarkers of aging. While these clocks work accurately from birth until death, they are set back to zero in each new generation. Now, an international team shows that epigenetic clocks not only exist in plants, but that these clocks keep ticking accurately over many generations.

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

Did animal evolution begin with a predatory lifestyle?      (via sciencedaily.com)     Original source 

Surprising findings on the development of sea anemones suggest that a predatory lifestyle molded their evolution and had a significant impact on the origin of their nervous system. The researchers were able to show that the young life stages (larvae) of the small sea anemone Aiptasia actively feed on living prey and are not dependent on algae. To capture its prey, the anemone larvae use specialized stinging cells and a simple neuronal network.

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

Extreme weight loss: Star sheds unexpected amounts of mass just before going supernova      (via sciencedaily.com)     Original source 

A newly discovered nearby supernova whose star ejected up to a full solar mass of material in the year prior to its explosion is challenging the standard theory of stellar evolution. The new observations are giving astronomers new insight into what happens in the final year prior to a star's death and explosion.

Offbeat: General Offbeat: Space Physics: General Physics: Quantum Physics Space: Astrophysics Space: Cosmology Space: General
Published

Down goes antimatter! Gravity's effect on matter's elusive twin is revealed      (via sciencedaily.com) 

For the first time, in a unique laboratory experiment at CERN, researchers have observed individual atoms of antihydrogen fall under the effects of gravity. In confirming antimatter and regular matter are gravitationally attracted, the finding rules out gravitational repulsion as the reason why antimatter is largely missing from the observable universe.

Chemistry: Biochemistry Physics: Optics Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features
Published

New proof for black hole spin      (via sciencedaily.com)     Original source 

The supermassive black hole at the heart of galaxy M87, made famous by the first picture of a black hole shadow, has yielded another first: the jet shooting out from the black hole has been confirmed to wobble, providing direct proof that the black hole is spinning.

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

New insights into the atmosphere and star of an exoplanet      (via sciencedaily.com) 

A new study of the intriguing TRAPPIST-1 exoplanetary system has demonstrated the complex interaction between the activity of the system's star and its planetary features.

Biology: Biochemistry Biology: Evolutionary Biology: General Biology: Zoology Ecology: Animals Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Nature
Published

Caribbean parrots thought to be endemic are actually relicts of millennial-scale extinction      (via sciencedaily.com)     Original source 

For the first time, researchers have extracted ancient DNA from Caribbean parrot fossils and archaeological specimens, showing that species thought to be endemic to particular islands were historically more widespread and diverse.

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

Hidden supermassive black holes reveal their secrets through radio signals      (via sciencedaily.com) 

Astronomers have found a striking link between the amount of dust surrounding a supermassive black hole and the strength of the radio emission produced in extremely bright galaxies.

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

Colorful primates don't have better color vision, study finds      (via sciencedaily.com)     Original source 

Primate species with better color vision are not more likely to have red skin or fur coloration, as previously thought.