Showing 20 articles starting at article 781
< Previous 20 articles Next 20 articles >
Categories: Physics: Acoustics and Ultrasound, Space: Exploration
Published How low-cost earbuds can make newborn hearing screening accessible
(via sciencedaily.com) Researchers have created a newborn hearing screening system that uses cheap earbuds and a smartphone instead of an expensive commercial device.
Published NASA laser project benefits animal researchers
(via sciencedaily.com) NASA's Global Ecosystem Dynamics Investigation (GEDI) mission can provide valuable information about the world's forests for wildlife scientists.
Published NASA's InSight lander detects stunning meteoroid impact on Mars
(via sciencedaily.com) NASA's InSight lander recorded a magnitude 4 marsquake last Dec. 24, but scientists learned only later the cause of that quake: a meteoroid strike estimated to be one of the biggest seen on Mars since NASA began exploring the cosmos. What's more, the meteoroid excavated boulder-size chunks of ice buried closer to the Martian equator than ever found before -- a discovery with implications for NASA's future plans to send astronauts to the Red Planet.
Published Scientists use deep planetary scan to confirm Martian core
(via sciencedaily.com) Seismologists have developed a new method to scan the deep interior of planets in our solar system to confirm whether they have a core at the heart of their existence.
Published Magma on Mars likely
(via sciencedaily.com) Until now, Mars has been generally considered a geologically dead planet. An international team of researchers now reports that seismic signals indicate vulcanism still plays an active role in shaping the Martian surface.
Published Traces of ancient ocean discovered on Mars
(via sciencedaily.com) Original source A recently released set of topography maps provides new evidence for an ancient northern ocean on Mars. The maps offer the strongest case yet that the planet once experienced sea-level rise consistent with an extended warm and wet climate, not the harsh, frozen landscape that exists today.
Published Astronomy: Observation puzzles researchers
(via sciencedaily.com) An international team of astrophysicists has made a puzzling discovery while analyzing certain star clusters. The finding challenges Newton's laws of gravity, the researchers write in their publication. Instead, the observations are consistent with the predictions of an alternative theory of gravity. However, this is controversial among experts.
Published Researchers create lunar regolith bricks that could be used to construct Artemis base camp
(via sciencedaily.com) As part of NASA's Artemis program to establish a long-term presence on the moon, it aims to build an Artemis base camp that includes a modern lunar cabin, rover and mobile home. This fixed habitat could potentially be constructed with bricks made of lunar regolith and saltwater, thanks to a recent discovery.
Published Balancing risk and reward in planetary exploration
(via sciencedaily.com) Original source Researchers have developed a new approach to balancing the risks and scientific value of sending planetary rovers into dangerous situations.
Published Ancient bacteria might lurk beneath Mars' surface
(via sciencedaily.com) Scientists found that ancient bacteria could survive close to the surface on Mars much longer than previously assumed. So, if life did, in fact, evolve when the last waters flowed on Mars, it would likely still be there today -- billions of years later.
Published Unprecedented glimpse of merging galaxies
(via sciencedaily.com) Original source Using the James Webb Space Telescope to look back in time at the early universe, astronomers discovered a surprise: a cluster of galaxies merging together around a rare red quasar within a massive black hole. The findings offer an unprecedented opportunity to observe how billions of years ago galaxies coalesced into the modern universe.
Published NASA's Webb takes star-filled portrait of pillars of creation
(via sciencedaily.com) Original source NASA's James Webb Space Telescope has captured a lush, highly detailed landscape -- the iconic Pillars of Creation -- where new stars are forming within dense clouds of gas and dust. The three-dimensional pillars look like majestic rock formations, but are far more permeable. These columns are made up of cool interstellar gas and dust that appear -- at times -- semi-transparent in near-infrared light.
Published International Space Station experiments reveal risks for future human space flights
(via sciencedaily.com) A long-term experiment aboard the International Space Station has tested the effect of space radiation on mouse embryonic stem cells. Their findings will contribute to helping scientists better assess the safety and risks related to space radiation for future human space flights.
Published Skin-attachable auditory sensor that functions even in noisy environments
(via sciencedaily.com) A research team has developed a skin-attachable auditory sensor, which recognizes human voices in noisy environments and when users wear facemasks. The new sensor will be useful in microphones that facilitate communication in disaster situations and for healthcare devices that diagnose respiratory diseases.
Published Scientists compile Cassini's unique observations of Saturn's rings
(via sciencedaily.com) Scientists have compiled 41 solar occultation observations of Saturn's rings from the Cassini mission. The compilation will inform future investigations of the particle size distribution and composition of Saturn's rings, key elements to understanding their formation and evolution.
Published NASA's Swift, Fermi missions detect exceptional cosmic blast
(via sciencedaily.com) Astronomers around the world are captivated by an unusually bright and long-lasting pulse of high-energy radiation that swept over Earth Sunday, Oct. 9. The emission came from a gamma-ray burst (GRB) -- the most powerful class of explosions in the universe -- that ranks among the most luminous events known.
Published NASA's Lucy to fly past thousands of objects for Earth gravity assist
(via sciencedaily.com) Mission engineers will track NASA's Lucy spacecraft nonstop as it prepares to swoop near Earth on Oct. 16 to use this planet's gravity to set itself on a course toward the Jupiter Trojan asteroids.
Published Hubble spots ultra-speedy jet blasting from star crash
(via sciencedaily.com) Astronomers have made a unique measurement that indicates a jet, plowing through space at speeds greater than 99.97 percent of the speed of light, was propelled by the titanic collision between two neutron stars.
Published Would traffic noise from future flying cars cause stress?
(via sciencedaily.com) 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 NASA confirms DART mission impact changed asteroid's motion in space
(via sciencedaily.com) Analysis of data obtained over the past two weeks by NASA's Double Asteroid Redirection Test (DART) investigation team shows the spacecraft's kinetic impact with its target asteroid, Dimorphos, successfully altered the asteroid's orbit. This marks humanity's first time purposely changing the motion of a celestial object and the first full-scale demonstration of asteroid deflection technology.