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Showing posts from March, 2024

Ice melting in Antarctica slowing Earth’s rotation, affecting timekeeping: Study

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Ice melting in Antarctica slowing Earth’s rotation, affecting timekeeping: Study   The repercussions of global warming extend beyond environmental concerns, as evidenced by recent research indicating its impact on timekeeping. Ice melting in Greenland and Antarctica, accelerated by rising temperatures, is altering the Earth's rotation speed, as detailed in a study conducted by Duncan Agnew, a geophysicist at Scripps Institution of Oceanography at the University of California San Diego. Agnew's research, published in the journal Nature, delves into the intricate relationship between the Earth's rotational dynamics and the consequential adjustments required in timekeeping systems. He elucidates how the Coordinated Universal Time (UTC), crucial for standardized and precise timekeeping in various networked activities like computing and financial markets, is affected by the Earth's variable rotation speed. Through mathematical modeling, Agnew demonstrates that while ...

Scientists find ‘Shiva’ and ‘Shakti,’ earliest building blocks of Milky Way

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  Scientists find ‘Shiva’ and ‘Shakti,’ earliest building blocks of Milky Way Scientists have discovered what could be the Milky Way's earliest building blocks and named them "Shiva" and Shakti."   Astronomers at the Max Planck Institute for Astronomy have unveiled a groundbreaking discovery: the potential earliest building blocks of the Milky Way, dubbed "Shiva" and "Shakti." These remnants are believed to stem from two galaxies that merged with an early version of our galaxy around 12 to 13 billion years ago, contributing significantly to its expansion. The identification of these components, named Shiva and Shakti, was accomplished by combining data from the European Space Agency’s Gaia satellite and the SDSS survey. This discovery can be likened to finding traces of a nascent settlement that eventually evolved into a sprawling metropolis, albeit on a cosmic scale. Galactic collisions and mergers set numerous processes into motion. Each...

Dark matter does not exist and the universe is 27 billion years old: A Study Report

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    Dark matter does not exist and the universe is 27 billion years old: A Study Report According to a groundbreaking proposal by theoretical physicist Rajendra Gupta of the University of Ottawa in Canada, fossilized sound waves in maps of galaxies across the universe can be interpreted as signs of a Big Bang that occurred much earlier than previously thought. Gupta's theory challenges current understanding of the age and composition of the universe, suggesting a radical reevaluation of fundamental concepts such as dark matter and dark energy. Gupta's research indicates that the accepted age of the universe, about 13.7 billion years, may be an illusion due to the way we understand cosmic structures and their evolution over time. His analysis, based on previous work, suggests that the true age of the universe may be significantly older, around 26.7 billion years, eliminating the need for dark matter to explain some phenomena. In conventional cosmology, the accelerated exp...

New material design capable of controlling temperature at which converts from insulator to conductor paves way for novel superconductors

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  In a groundbreaking endeavor, scientists have devised a revolutionary synthetic material design poised to revolutionize electronic devices by transcending the limitations of traditional transistors. This novel advancement, achieved through collaborative efforts between researchers from the Indian Institute of Science (IISc), Japan, Denmark, and the United States, promises to redefine the landscape of electronic switches by overcoming the longstanding challenge of electronic 'traffic jams'. Conventional materials are categorized as either electrical conductors or insulators. However, correlated electron materials present a unique class that exhibits a transition from insulator to metal under specific conditions, typically temperature-dependent. This transition, while significant, poses challenges for applications such as electronic switches that necessitate consistent operation at ambient temperatures. Led by luminaries like Prof. Naga Phani and his team at the Solid State and...

"Celestial Spectacle: Comet '12P/Pons-Brooks' to Grace Mumbai Skies After 71 Years"

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  "Celestial Spectacle: Comet '12P/Pons-Brooks' to Grace Mumbai Skies After 71 Y ears" Mumbai, a bustling metropolis that rarely pauses for a celestial spectacle, is set to witness the return of a long-lost visitor to our night skies. Named '12P/Pons-Brooks,' this periodical comet is creating ripples of excitement among the international scientific community as it hurtles toward Earth on its return journey after 71 years. The astronomical community in India has already been treated to early glimpses of this celestial wanderer, with amateur astronomers capturing its bright, tiny spot on camera. Dr. Bharat Adur, a prominent scientist and the founder-secretary of the Amateur Astronomers Association (Mumbai), shared the exhilarating news of the comet's imminent visit. Astronomers from various parts of India, including a passionate amateur from Jorhat, Assam, have managed to capture the comet's early appearance. A captivating photo of '12P/Pons-Brooks...