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Categories: Physics: Acoustics and Ultrasound, Space: Structures and Features
Published Black hole spews out material years after shredding star


Astronomers have observed a black hole burping up stellar remains years after it shredded and consumed the star.
Published Would traffic noise from future flying cars cause stress?


Study shows that not only are loud vehicles flying overhead a cause of noise pollution-related stress, the effect of that stress remains on the body even after noise levels have decreased.
Published Black hole discovered firing jets at neighboring galaxy


A team of astronomers has discovered a unique black hole spewing a fiery jet at another galaxy. The black hole is hosted by a galaxy around one billion light years away from Earth named RAD12.
Published The Secret of Swing: Downbeat delays


Jazz must swing -- jazz musicians agree on that. However, even 100 years after the beginnings of jazz, it is still unclear what exactly constitutes the swing feel. With a sophisticated experiment and data analyses on more than 450 well-known jazz solos, physicists together with psychologists have unraveled a secret of swing. They were able to demonstrate that certain systematic deviations in timing are a key component of swing. These microtiming deviations are so small that they are not perceived as such even by professional jazz musicians, who nonetheless are using them unconsciously.
Published Cosmic ray protons reveal new spectral structures at high energies


Discovered in 1912, cosmic rays have been studied extensively and our current understanding of them is compiled into what is called the Standard Model. Recently, this understanding has been challenged by the detection of unexpected spectral structures in the cosmic ray proton energy spectrum. Now, scientists take this further with high-statistics and low-uncertainty measurement of these protons over a broader energy range using the CALorimetric Electron Telescope, confirming the presence of such structures.
Published Potential first traces of the universe's earliest stars



Astronomers may have discovered the ancient chemical remains of the first stars to light up the Universe. Using an innovative analysis of a distant quasar observed by the 8.1-meter Gemini North telescope on Hawai'i, the scientists found an unusual ratio of elements that, they argue, could only come from the debris produced by the all-consuming explosion of a 300-solar-mass first-generation star.
Published Webb reveals a galaxy sparkling with the universe's oldest star clusters


Using the James Webb Space Telescope (JWST), researchers have identified the most distant globular clusters ever discovered. These dense groups of millions of stars may be relics that contain the first and oldest stars in the universe. The early analysis of Webb's First Deep Field image depicts some of the universe's earliest galaxies.
Published Milky Way's graveyard of dead stars found


The first map of the 'galactic underworld' -- a chart of the corpses of once massive suns that have since collapsed into black holes and neutron stars -- has revealed a graveyard that stretches three times the height of the Milky Way, and that almost a third of the objects have been flung out from the galaxy altogether.
Published Astronomers map distances to 56,000 galaxies, largest-ever catalog


Astronomers have assembled the largest-ever compilation of high-precision galaxy distances, called Cosmicflows-4.
Published Mysterious ripples in the Milky Way were caused by a passing dwarf galaxy



Using data from the Gaia space telescope, a team has shown that large parts of the Milky Way's outer disk vibrate. The ripples are caused by a dwarf galaxy, now seen in the constellation Sagittarius, that shook our galaxy as it passed by hundreds of millions of years ago.
Published Wind music causes less transmission than singing, study finds


The risk of transmission from an infected person on a wind instrument is generally much lower than for people who sing or speak, provided that one spends the same amount of time in their vicinity, according to a new study.
Published The super-fast MRI scan that could revolutionize heart failure diagnosis


Researchers have developed cutting-edge technology to diagnose patients with heart failure in record time. The state-of-the-art technology uses magnetic resonance imaging (MRI) to create detailed 4D flow images of the heart. But unlike a standard MRI scan, which can take up to 20 minutes or more, the new 4D heart MRI scan takes just eight minutes.
Published It's a planet: New evidence of baby planet in the making


Astronomers have developed a new technique to identify small planets hidden in protoplanetary disks.
Published Where do high-energy particles that endanger satellites, astronauts and airplanes come from?


Astrophysicists show how and when specific particles form and offers clues to questions that have troubled scientists since the 1940s.
Published Astronomy: Is over-eating to blame for bulges in Milky Way bar?



A new simulation conducted on the world's most powerful supercomputer dedicated to astronomy has produced a testable scenario to explain the appearance of the bar of the Milky Way. Comparing this scenario to data from current and future space telescopes will help clarify the evolution of our home Galaxy.
Published Could more of Earth's surface host life?


Of all known planets, Earth is as friendly to life as any planet could possibly be -- or is it? If Jupiter's orbit changes, a new study shows Earth could be more hospitable than it is today.
Published Physicists invoke the cosmological collider to explain why matter, and not antimatter, dominates the universe


Early in its history, shortly after the Big Bang, the universe was filled with equal amounts of matter and 'antimatter' -- particles that are matter counterparts but with opposite charge. But then, as space expanded, the universe cooled. Today's universe is full of galaxies and stars which are made of matter. Where did the antimatter go, and how did matter come to dominate the universe? This cosmic origin of matter continues to puzzle scientists. Physicists have now opened a new pathway for probing the cosmic origin of matter by invoking the 'cosmological collider.'
Published Hubble finds spiraling stars, providing window into early universe



Stars are the machines that sculpt the universe, yet scientists don't fully know how they form. To understand the frenzied 'baby boom' of star birth that occurred early in the universe's history, researchers turned to the Small Magellanic Cloud, a satellite galaxy of the Milky Way. This nearby galaxy has a simpler chemical composition than the Milky Way, making it similar to the galaxies found in the younger universe, when heavier elements were more scarce. This allows it to serve as a proxy for the early universe. Two separate studies -- the first with the Hubble Space Telescope, and the second with the European Southern Observatory's Very Large Telescope -- recently came to the same conclusion. Using different methods, the independent teams found young stars spiraling into the center of a massive star cluster called NGC 346 in the Small Magellanic Cloud. This river-like motion of gas and stars is an efficient way to fuel star birth, researchers say. The teams' results show that the process of star formation in the Small Magellanic Cloud is similar to that in our own Milky Way.
Published Surprise finding suggests 'water worlds' are more common than we thought


A new study suggests that many more planets may have large amounts of water than previously thought--as much as half water and half rock. The catch? All that water is probably embedded in the rock, rather than flowing as oceans or rivers on the surface.
Published Two new temperate rocky worlds discovered


Astronomers have just announced the discovery of two 'super-Earth' planets orbiting LP 890-9, a small, cool star located about 100 light-years from Earth.