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When two black holes orbit each other, they eventually spiral inward and collide in one of the most violent phenomena in the universe. The event is so energetic that it significantly distorts the universe around it. It emits gravitational waves—ripples in the fabric of spacetime—that are strong enough to be detected with precision instruments on Earth even when they originate billions of light-years away.
Hayabusa 2’s primary mission is now well in the past. JAXA’s asteroid-sampling spacecraft rendezvoused with asteroid Ryugu in June 2018. It studied the asteroid for 1.5 years and gathered a sample that was returned to Earth in December 2020.
Astronomers studying a population of unusually X-ray-silent and overmassive black holes discovered by the James Webb Space Telescope have found that they may not be as massive as they appear. The new paper, outlining a plausible scenario that would produce such black holes, was published in Astronomy & Astrophysics on June 19.
Day will briefly turn into night across a swath of northern Spain on Aug. 12, when the moon will completely cover the sun during a rare total solar eclipse.
As a child, Enrique Bordallo would gaze in awe at the starry night sky in rural Spain. Next month’s solar eclipse has now made his passion a popular obsession.
A team of researchers led by Felipe Herrera, a professor at the University of Santiago and a researcher at the Millennium Institute for Research in Optics (MIRO), has identified a quantum phenomenon that enables chemical bonds to be broken using significantly less energy than is normally required.
Following its longest hibernation period ever of nearly a year, NASA’s New Horizons spacecraft has emerged in good health and is ready to begin transmitting science data gathered in the distant Kuiper Belt far beyond Pluto.
The galaxy Centaurus A is about 11 million light-years away and is the fifth-brightest galaxy in the sky. Because it’s so bright, it’s been studied extensively by amateur and professional astronomers alike. Also called NGC 5128, it’s a starburst galaxy, meaning it’s forming stars at a rapid rate.
Det. Robert Karroll was shot in the back of the vest as officers confronted an 18-year-old suspect who shot into a passing car before approaching an unmarked NYPD vehicle
Orange County Sheriff’s Office deputies retreated toward the street and repeatedly ordered the woman to drop the knife, but she refused and ran toward them, shouting “I’ll kill you”
Researchers from The Grainger College of Engineering at the University of Illinois Urbana-Champaign have developed the first magnetic multipole-based micromagnetic model for antiferromagnets. Published in Applied Physics Reviews, their generalized framework provides a theoretical and computational foundation for designing future spintronic devices made with antiferromagnetic materials.
A team of scientists from Oak Ridge National Laboratory, Cleveland Clinic and IBM has calculated nine molecular configurations of a promising material to produce fuel for fusion energy—the first known instance of such computations on quantum computers.
Superconductors have long been considered a promising technology for the energy systems of the future. They can conduct electricity without resistance, thus eliminating both conduction losses and waste heat. Up to now, however, superconductors have only been applied in special cases, as in the immensely powerful magnet coils of particle accelerators such as the Large Hadron Collider at CERN. This is because superconductors must be well cooled, down to extremely low temperatures for some materials.
When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of biology because they are often produced by living microbes. However, scientists can be misled because certain geological processes can produce chemical signatures identical to those of living organisms.
From mobile phones and banking systems to aircraft, ships and emergency services, much of modern life relies on precise timing signals from satellites. Known as the Global Navigation Satellite System (GNSS), satellites carrying atomic clocks transmit time-stamped signals to receivers on Earth. The Global Positioning System (GPS) is the best-known GNSS in Australia and the United States, but it is only one of several systems used globally.
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