The mortuary house in question measured five by three meters. It had corner posts, and the walls were made of standing planks, in a building style similar to that used in early stave churches. Archaeologists could see that the building was solidly constructed, even though the only thing that remains is a rectangular ditch with ...
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 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 ...
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 ...
Last December, scientists discovered an “active” asteroid within the asteroid belt sandwiched between the orbits of Mars and Jupiter. The space rock, designated by astronomers as 6478 Gault, appeared to be leaving two trails of dust in its wake — active behavior that is associated with comets, but which is rarely seen in asteroids. While ...
Scientists, including from The Australian National University (ANU), say they have detected a black hole swallowing a neutron star for the first time. These are the super-dense remains of dead stars. On Wednesday 14 August 2019, gravitational-wave discovery machines in the United States and Italy detected ripples in space and time from a cataclysmic event ...
If our eyes could see high-energy radiation called gamma rays, the Moon would appear brighter than the Sun! That’s how NASA’s Fermi Gamma-ray Space Telescope has seen our neighbor in space for the past decade. Gamma-ray observations are not sensitive enough to clearly see the shape of the Moon’s disk or any surface features. Instead, Fermi’s Large ...
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