News about PaperPanda, Open Access, and Research
While we sleep this spring, billions of birds will be flying through the night from their wintering grounds to their breeding territories. Bird migration is a mind-bendingly astonishing phenomenon: these tiny creatures fly thousands of kilometers with enough precision to return to the same nesting site year after year. They use three types of compass, … Read more
A composite image of the Bullet Cluster, a much-studied pair of galaxy clusters that have collided head on. One has passed through the other, like a bullet traveling through an apple, and is thought to show clear signs of dark matter (blue) separated from hot gases (pink). (Image credit: X-ray: NASA/ CXC/ CfA/ M.Markevitch, Optical … Read more
One of the largest COVID-19 brain imaging studies to date has shed some unsettling light on the disease’s impact on our brains. Even in those with a mild or moderate case, a SARS-CoV-2 infection was associated with “significant” neurological changes and loss of gray matter. The study looked at the brain scans of 785 … Read more
Most mammals, including humans, have two sex chromosomes, X and Y. One sex chromosome is usually inherited from each parent, and they pair up as either XX or XY in every cell of the body. People with XX chromosomes typically identify as female, and people with XY chromosomes typically identify as male. The genes … Read more
Large galaxies may steal dark matter from smaller galaxies they nearly collide with, new research suggests. Scientists from the University of California, Irvine and Pomona College used computer models to simulate the evolution of a corner of the universe about 60 million light-years across. The new computer models, which weren’t designed to do so, created … Read more
In the Cosmic Calendar, which maps the chronology of the Universe across a single Earth year, modern humans don’t appear until the very last minute of December 31. Everything we understand about the evolution of the Universe, we’ve had to piece together. We simply haven’t been around for pretty much any of the 13.7 billion-year … Read more
In 2016 a panel of physicists, a cosmologist and a philosopher gathered at the American Museum of Natural History to discuss an idea seemingly befitting science fiction: Are we living in a computer simulation? How exactly the flesh and blood of our brain is able to formulate an aware, self-examining mind capable of critical thought … Read more
Roughly 80% of the mass of the universe is made up of material that scientists cannot directly observe. Known as dark matter, this bizarre ingredient does not emit light or energy. So why do scientists think it dominates? Since at least the 1920s, astronomers have hypothesized that the universe contains more matter than seen by … Read more
When gravitational waves pass over massive objects, they should create an echo that could allow us to examine objects that we can’t otherwise see, including dark matter Space 27 January 2022 By Leah Crane An illustration of gravitational waves Shutterstock The entire universe is suffused with gravitational waves, ripples in space-time caused by the motion … Read more
Stellar groupings orbiting in the outskirts of the Milky Way shed new light on the evolution of our galaxy as well as the elusive dark matter that surrounds it. Scientists from the Carnegie Institution for Science mapped a dozen associations of stars that orbit within the gaseous halo that envelopes our galaxy, the Milky Way. … Read more