Astronomers recategorize asteroid-like comet
203,184 articles from PhysOrg
How do dogs help us adjust to social distancing and other COVID-19 challenges?
Recently discovered object 2019 LD2, originally believed to be the first cometary "Jupiter Trojan" asteroid by astronomers at the University of Hawaiʻi at Mānoa Institute for Astronomy turns out to be an interloper comet masquerading as a member of the Trojan population. The distinction was first suggested by amateur astronomers Sam Deen and Tony Dunn on the Minor Planet Mailing List on May 21...
Individualists are less likely to obey hurricane evacuation orders
Brian Hare, Ph.D. professor of evolutionary anthropology and director of Duke Canine Cognition Center, discussed how dogs help people to adjust to the challenges of the coronavirus pandemic.
Simulations explain detonation properties in TATB
Hurricanes may take erratic paths, but the response by those in harm's way often follows a predictable pattern. Even in the face of repeated warnings and many people evacuating, some residents of high-risk areas invariably discount the forecasts and refuse to take shelter.
AI identifies change in microstructure in aging materials
Two Lawrence Livermore National Laboratory (LLNL) scientists have discovered a new mechanism for ignition of high explosives that explains the unusual detonation properties of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB).
Herding wild buffalo and cattle from space
Lawrence Livermore National Laboratory (LLNL) scientists have taken a step forward in the design of future materials with improved performance by analyzing its microstructure using AI.
Taming CRISPR's collateral damage
More than 1000 feral buffalo and unmanaged cattle roaming Northern Australia will be tagged and tracked as part of the world's largest satellite herd-tracking program, announced today by Australia's national science agency, CSIRO.
Heat now more lethal than cold for people with respiratory diseases in Spain
CRISPR-Cas9 can alter genes at pre-defined sites in specific ways, but it does not always act as planned. An LMU team has now developed a simple method to detect unintended "on-target" events, and shown that they often occur in human stem cells.
Winds spread PFAS pollution far from a manufacturing facility
A new study by the Barcelona Institute for Global Health (ISGlobal), a center supported by the la Caixa Foundation, has analyzed deaths linked to respiratory disease in Spain between 1980 and 2016. The study, which analyzed data on more than 1.3 million deaths, found that the seasonality of temperature-attributable mortality from respiratory diseases has shifted from the coldest to the hottest...
Researchers use geometry and dynamics to better understand tissue organization
Concerns about environmental and health risks of some fluorinated carbon compounds used to make non-stick coatings and fire-fighting foams have prompted manufacturers to develop substitutes, but these replacements are increasingly coming under fire themselves. To get a handle on the scope of the problem, scientists have been studying how widely these chemicals have contaminated the environment....
Royal jelly does not a queen make
Embryogenesis—how an organism arises from a single cell—is one of the most mysterious and complex processes in nature. The large-scale, coordinated and collective movements of cells in a tissue during embryogenesis resemble the complex and chaotic flows of fluids in the ocean or atmosphere. But how do these movements determine which cells are destined to become part of the brain, the gut or...
India wilts under heatwave as temperature hits 50 degrees Celsius
What makes a queen? For bees, it's long been believed that queenliness depends on a special diet of royal jelly—a milky white secretion of protein, water and fat that oozes from the heads of nurse bees.
SpaceX's moment of triumph arrives as astronauts ready for US launch
India is wilting under a heatwave, with the temperature in places reaching 50 degrees Celsius (122 degrees Fahrenheit) and the capital enduring its hottest May day in nearly two decades.
Virgin Orbit analyzing data to find cause of rocket failure
A new era in space begins Wednesday with the launch by SpaceX of two NASA astronauts into space, a capability that for six decades symbolized the power of a handful of states, and which the United States itself had been deprived of for nine years.
How exposure to negative feedback in influences goal-directed consumer behaviors
Virgin Orbit engineers were analyzing data Tuesday to find out what caused the maiden flight of its air-launched satellite booster to fail.
Chimpanzees help trace the evolution of human speech back to ancient ancestors
Threats to self-esteem and negative feedback are pervasive in today's society. Social media researchers, for example, have shown a link between frequent usage of social media websites and upward social comparison and negative affect.
SpaceX readies for blast-off with NASA astronauts aboard
One of the most promising theories for the evolution of human speech has finally received support from chimpanzee communication, in a study conducted by a group of researchers led by the University of Warwick.
Gray skies loomed over Florida's Atlantic coast Tuesday, just one day before two astronauts were set to blast off aboard a SpaceX capsule on the most dangerous and prestigious mission NASA has ever entrusted to a private company.
TUESDAY 26. MAY 2020
Weather better for historic SpaceX launch of NASA astronauts
Flow-through electrodes make hydrogen 50 times faster
With the weather looking up, SpaceX and NASA officials vowed Tuesday to keep crew safety the top priority for the nation's first astronaut launch to orbit in nearly a decade.
Urge to merge: Understanding how cells fuse
Electrolysis, passing a current through water to break it into gaseous hydrogen and oxygen, could be a handy way to store excess energy from wind or solar power. The hydrogen can be stored and used as fuel later, when the sun is down or the winds are calm.
MAVEN maps electric currents around mars that are fundamental to atmospheric loss
Scientists have known for a decade that cells that fuse with others to perform their essential functions—such as muscle cells that join together to make fibers—form long projections that invade the territory of their fusion partners. But how the thin and floppy polymers involved in this process propel mechanically stiff protrusions has been unknown.
Can e-learning help stem the threat of invasive alien species such as Japanese Knotweed?
Five years after NASA's MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere.
Nanodevices show how cells change with time, by tracking from the inside
E-learning could be a crucial tool in the biosecurity fight against invasive alien species such as Japanese Knotweed, Zebra Mussels and Signal Crayfish according to a new study published in the academic journal Biological Invasions.
Novel insight reveals topological tangle in unexpected corner of the universe
For the first time, scientists have introduced minuscule tracking devices directly into the interior of mammalian cells, giving an unprecedented peek into the processes that govern the beginning of development.
Warming climate is changing where birds breed: study
Just as a literature buff might explore a novel for recurring themes, physicists and mathematicians search for repeating structures present throughout nature.
Spring is in full swing. Trees are leafing out, flowers are blooming, bees are buzzing, and birds are singing. But a recent study published in Proceedings of the National Academy of Sciences found that those birds in your backyard may be changing right along with the climate.