Science & Space

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science · 6h
'Stupendously large' primordial black holes ruled out as a dark matter source
Nicholas Leister at the Mainz Institute for Theoretical Physics and colleagues calculated whether "stupendously large" primordial black holes could account for dark matter, which is thought to make up around 85% of the…
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0 repliesphys.org ↗
science · 8h
ADHD symptoms may reflect a brain shifting toward overly synchronized activity, study suggests
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0 repliespsypost.org ↗
science · 9h
Exposure to air pollution during pregnancy and early childhood was associated with reduced lung function that persisted into adolescence, with just 2 μg/m³ more fine particulate matter around the chil
A University of Copenhagen, Danish Pediatric Asthma Centre, and Herlev and Gentofte Hospital study examined early life air pollution and lung function in children and adolescents. Researchers used data from 846 pairs of…
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0 repliesnews.ku.dk ↗
science · 12h
U.S. children and adolescents see thousands of food marketing messages on digital media platforms each year, according to new research. And 92% of the marketed food and beverage products are considere
Lisa Powell at the University of Illinois Chicago led a study that used screen recordings to examine food marketing seen by U.S. children and adolescents on smartphones and tablets. Researchers recorded 1,011 youths…
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science · 15h
A healthier form of salt could prevent millions of deaths from stroke and heart disease
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science · 19h
Extreme Heat and Cold: Excess Mortality Over Tenfold Higher With Illness and Social Disadvantage
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0 replieshumanumi.com ↗
science · 23h
An Australian-developed therapy aimed at halting motor neurone disease (MND) progression and restoring function will advance to a national Phase 2 clinical trial. The protein-based therapy, called NUN
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0 repliesnews.uq.edu.au ↗
science · 1d
Scientists achieve a temperature 280 billion times colder than deep space. Pushing matter closer to absolute zero and opening new possibilities for studying quantum behaviors that could advance future
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science · 1d
The Covid-19 pandemic caused stress that sped up biological aging at the DNA level, especially in adolescents aged 14-16, who showed the strongest link between perceived pandemic stress, especially so
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0 repliesmpg.de ↗
science · 1d
CRISPR Editing of ANGPTL3: A Single Dose Reduces Lipids for Up to 3 Years in Primates
Nature published a preclinical (animal and cell) study led by Taiji Mizoguchi and Jamie E. DeNizio of a single-dose CRISPR treatment for high LDL cholesterol and triglycerides. The treatment uses a CRISPR base editor (a…
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science · 1d
The oldest found Mars meteorite opens a new window into the planet’s past
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science · 1d
Alternative model in which the universe is 26.7 billion years old and needs neither dark matter nor dark energy passes major cosmological tests
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0 repliesphys.org ↗
science · 1d
Pakistani astronaut to join China’s next space station mission
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0 repliesaljazeera.com ↗
science · 1d
Meteor lights up sky over Tennessee, NASA says
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0 repliesnypost.com ↗
science · 1d
For autistic teens, how confident they feel socially matters more for their well-being than their observable social skills. In a study of 117 teens, social anxiety and low self-confidence predicted lo
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0 repliespsypost.org ↗
science · 1d
Kids with better aerobic fitness were less likely to develop depression decades later
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0 repliespsypost.org ↗
science · 2d
Gas discovered near giant Mars volcano hints at potentially life-friendly environment beneath the surface
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0 replieslivescience.com ↗
science · 2d
Worsening climate change could undermine humanity's ability to respond, as economic crises, political instability and weakened institutions reduce our capacity to cut emissions and adapt, potentially
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0 repliesiopscience.iop.org ↗
science · 2d
Eating healthier was linked to slower biological aging across all 10 diets studied, including Mediterranean, DASH, MIND and plant-based. In 6,470 adults, DNA "aging clocks" ticked slower in people who
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science · 2d
Treatment developed by University of Oulu researchers boosts brain clearance and opens up new possibilities for preventing neurodegenerative diseases
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science · 2d
Cambridge University scientists have developed a bird flu vaccine using AI technology that gave complete protection against globally circulating variants
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science · 2d
Vitamin K deficiency on the rise as more parents decline recommended shots for their newborns
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science · 2d
An alternative model in which the Universe is 26.7 billion years old and needs neither dark matter nor dark energy has held up against several major cosmology tests, warranting further investigation
A University of Ottawa team tested CCC+TL, a model that credits dark matter and dark energy effects to evolving fundamental constants. It agreed with several major observations. Rajendra Gupta and Nikolaos Samaras…
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0 repliesuottawa.ca ↗
science · 3d
Dinch, a plastic softener used in toys, cling wrap, food packaging and medical tubing as a 'safer' swap for toxic phthalates, may also be harmful: in a new US study, pregnant women with higher levels
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science · 3d
A robotic truss builder has successfully built a structure in space without the help of astronauts, for the first time
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science · 3d
Beijing approves giant Long March 9 rocket for deep-space and lunar base runs
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science · 3d
A quarter of Americans falsely link child vaccines and acetaminophen to autism, survey shows
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0 repliesindependent.co.uk ↗
science · 3d
Rapidly developing ‘super El Niño’ on track to peak in December. The ongoing “super El Niño” is likely to peak at the end of 2026 and push average global temperatures to record levels next year.
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science · 3d
After 42 Years of Searching, Physicists Find Evidence of a One-in-10-Billion Particle Decay
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science · 4d
Scientists have picked up signals from the smallest scale of nature ever explored, 100 billion times smaller than an atom. Observed at the Large Hadron Collider, it could help develop a new theory of
Researchers at the Large Hadron Collider have detected signals from the zeptoverse, a region a billionth of a trillionth of a meter wide, in work led in part by British scientist Harry Cliff. The source gives no count…
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'Stupendously large' primordial black holes ruled out as a dark matter source

phys.org↗

Nicholas Leister at the Mainz Institute for Theoretical Physics and colleagues calculated whether "stupendously large" primordial black holes could account for dark matter, which is thought to make up around 85% of the matter in the universe.

  • Primordial black holes are hypothetical objects that could have formed from dense matter in the early universe. The team tested black holes each at least 100 billion times the sun's mass.
  • They calculated how random clumps of these black holes would make dark matter and radiation uneven. They compared that with measurements of the cosmic microwave background (the faint microwave afterglow of the Big Bang).
  • A large population of these black holes would leave uneven patterns in that afterglow, and those patterns do not appear in the measured signal.
  • The study does not rule out these black holes entirely. The team assumed all black holes have the same mass, so populations with a range of masses still need study.
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