Suppose Albert Einstein’s theory of general relativity holds. In that case, a black hole, born from the cosmically quaking collisions of two massive black holes, should itself “ring” in the aftermath, producing gravitational waves much like a struck bell reverberating sound waves. Einstein predicted that these gravitational waves’ particular pitch and decay should be a ...
A gigantic, balloon-like structure has been hiding in plain sight, right in the center of our own galaxy. An international team of astronomers, including Northwestern’s Farhad Yusef-Zadeh, discovered the structure, which is one of the largest ever observed in the center of the Milky Way. The newly spotted pair of radio-emitting bubbles reach hundreds of ...
To build the next generation of powerful proton accelerators, scientists need the strongest magnets possible to steer particles close to the speed of light around a ring. For a given ring size, the higher the beam’s energy, the stronger the accelerator’s magnets need to be to keep the beam on course. Scientists at the Department ...
All comets might share their place of birth, new research says. For the first time ever, astronomer Christian Eistrup applied chemical models to 14 well-known comets, surprisingly finding a clear pattern. His publication has been accepted in the journal Astronomy & Astrophysics. Balls of ice or more? Comets travel through our solar system and are ...
A key tracer used to estimate how much atmosphere Mars lost can change depending on the time of day and the surface temperature on the Red Planet, according to new observations by NASA-funded scientists. Previous measurements of this tracer — isotopes of oxygen — have disagreed significantly. An accurate measurement of this tracer is important ...
Astronomers are closing in on a signal that has been traveling across the Universe for 12 billion years, bringing them nearer to understanding the life and death of the first stars. In a paper on the preprint site arXiv, soon to be published in the Astrophysical Journal, a team led by Dr. Nichole Barry from Australia’s University ...
Researchers at the University of Illinois at Urbana-Champaign have replicated one of the most well-known electromagnetic effects in physics, the Hall effect, using radio waves (photons) instead of electric current (electrons). Their technique could be used to create advanced communication systems that boost signal transmission in one direction while simultaneously absorbing signals going in the ...
In an unprecedented feat, an American research team discovered hidden secrets of an elusive exoplanet using a powerful new instrument at the 8-meter Gemini North telescope on Maunakea in Hawai’i. The findings not only classify a Jupiter-sized exoplanet in a close binary star system, but they also conclusively demonstrate, for the first time, which star ...
Clues from Canadian rocks formed billions of years ago reveal a previously unknown loss of life even greater than that of the mass extinction of the dinosaurs 65 million years ago. The Earth lost nearly three-quarters of its plant and animal species in a huge die-off in the ancient biosphere. Rather than prowling animals, this ...
Researchers from Cambridge and Queen’s University Belfast have identified and defined 500 lost Irish words and unlocked the secrets of many other misunderstood terms. Their findings can now be freely accessed in the revised version of the online dictionary of Medieval Irish. If you were choosing where to live in medieval Ireland, you might insist ...
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