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Nearly every massive galaxy observed hosts a supermassive black hole at its center. NASA’s James Webb Space Telescope has discovered that some of these supermassive black holes may even be too big for the galaxy they’re found in, challenging astronomers’ understanding of these objects and prompting questions about their growth in the early universe. Astronomers […] Research led by the Tata Institute of Fundamental Research, Mumbai, along with Professor Subir Sarkar from the University of Oxford, questions the widely accepted argument that the expansion rate of the universe is accelerating and that this is driven by “dark energy” arising from the quantum vacuum. Their letter has been published in Monthly Notices […] There are multiple ways to form black holes. The one most commonly taught in high school physics classes is that they are created from the collapse of a dying star. But there is another class of black holes, known as primordial black holes (PBHs), that could have been created immediately after the Big Bang by […] Stars form when vast clouds of cold gas in space collapse under their own gravity. But not all gas collapses, and not all clouds form stars equally efficiently. A longstanding puzzle in astrophysics is what controls this process—and a leading suspect has been the role of magnetic fields, which thread through interstellar gas like an […] Astronomers have used the James Webb Space Telescope to catch an extraordinary glimpse of a massive galaxy taking shape in the early universe. They identified a compact group of at least six galaxies that are likely to merge into a single enormous system. At the heart of this cosmic construction site lies a growing supermassive […] Current plans for flagship telescopes in the 2040s are focused on answering a simple question: Are we alone? Our best telescopes to date, such as the James Webb Space Telescope (JWST), have given us only tantalizing glimpses into the atmospheres of other worlds, but not enough to truly determine whether life as we know it […] Microorganisms from our planet could survive on celestial bodies where water is present, such as Mars. That is the conclusion of Ph.D. candidate Tommaso Zaccaria after experiments with simulated space conditions. Our immune system reacts less effectively to pathogens that have undergone such a simulated space journey. According to his supervisors, his dissertation provides extraterrestrial […] Astronomers have discovered a “remarkable” bow-and-arrow-shaped radio galaxy with an enormous arc-like structure extending nearly 1.8 million light-years across. The newly identified system, detailed in a new paper published today in Monthly Notices of the Royal Astronomical Society: Letters, has a “highly unusual” and asymmetric structure unlike those seen in standard radio galaxies. Go to […] An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is unlike anything ever seen before in our cosmic backyard, astronomers said Monday. Go to Source Researchers are constantly sifting through new spectral data gathered by powerful telescopes, like the James Webb Space Telescope (JWST). Most of the time, when they identify spectral features—specific absorption or emission lines from different types of light gathered from a planet, moon or star—these features are known to be caused by certain atoms or molecules. […] With the release of “Disclosure Day,” Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: If aliens were to arrive on Earth, would they come to conquer us, to study us … or perhaps to eat? Go to Source On a bleak stretch of the Colorado Desert in Southern California, a compact four-wheeled rover recently trundled 16 miles (26 kilometers) with minimal intervention from the team of engineers trailing it. Called ERNEST (Exploration Rover for Navigating Extreme Sloped Terrain), this prototype is being used by NASA to advance both robotic autonomy and the ability […] Using the Multi Unit Spectroscopic Explorer (MUSE) and the Manchester Echelle Spectrograph (MES), astronomers from Turkey and Mexico have investigated a planetary nebula discovered two centuries ago, known as NGC 6563. Results of the observations, published June 15 in a special issue of Galaxies journal, yield important insights into the morphology and kinematics of this […] The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to be completely natural and free of any alien tech. Go to Source As humans, we live out our lives on a planet that is constantly sweeping through a cosmic ocean littered with ancient debris from the formation of the solar system. For the most part, our world glides silently through space, shielded by Earth’s thin atmosphere. Go to Source |
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