
When Will Universe Die? New dark energy data makes big bombshell revelations. Here's complete truth
When Will Universe Die? Scientists have long believed the universe would continue expanding forever. However, new findings challenge this view. Recent data from two key cosmic surveys suggest dark energy may not be constant. This could eventually lead to a cosmic collapse known as the 'Big Crunch.' The future of the universe is now open to new interpretations.Researchers from the Dark Energy Survey (DES) and the Dark Energy Spectroscopic Instrument (DESI) collected detailed observations of galaxies across the universe. This data shows that the force responsible for cosmic expansion, called dark energy, may not behave in a constant way.
Dark energy has been assumed to follow the cosmological constant, a fixed value based on Einstein's theory of general relativity. But new results suggest this model might be incomplete or incorrect.
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A recent study, released in June and now awaiting peer review, offers a new model. It proposes that dark energy includes two parts: the axion and the cosmological constant.
Axion: This is a hypothetical ultralight particle. It rarely interacts with matter but can influence the universe on large scales.Cosmological constant: This is a number in Einstein's equations. It is linked to the energy density of space itself.Researchers now believe that the current acceleration of the universe may be mostly due to the axion, rather than the cosmological constant alone.Over time, the axion field may lose its strength. Once this happens, the cosmological constant, which is negative in this new model, could dominate.Unlike a positive cosmological constant, which speeds up expansion, a negative one slows it down. This could reverse the expansion process, according to the study.If this model is correct, the universe's expansion may stop. Then, the universe would start to contract. This would lead to a future collapse phase called the 'Big Crunch.'In this stage, galaxies would move closer, collide, and merge. The universe would become smaller, hotter, and denser. All cosmic structures could break down.
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According to the researchers, this change could begin in about 10 billion years. That is much sooner than earlier predictions which assumed endless expansion.Another 10 billion years after that could see the universe collapsing completely. The full lifespan of the universe, according to this theory, could be around 33 billion years.The idea that dark energy changes over time introduces major questions. If proven, this could shift the foundation of modern cosmology.For now, the findings are under review. But they open the door to future studies that may better explain how the universe will end.
What is the Big Crunch?
The Big Crunch is a theory where the universe stops expanding and begins contracting until it collapses into a dense, hot point.
When might the universe collapse?
The universe may start to collapse in about 10 billion years and fully collapse in another 10 billion, totalling about 33 billion years of cosmic life.
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Economic Times
3 days ago
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Our universe might have an expiry date and it's sooner than we thought
The universe may not be heading for an eternal stretch into emptiness, as once assumed. According to new findings from two of the largest astronomical surveys — the Dark Energy Survey (DES) and the Dark Energy Spectroscopic Instrument (DESI) — the mysterious force known as dark energy could be changing. That shift, if real, has serious consequences. Instead of expanding forever, the universe might one day contract. Scientists now believe a complete reversal could start within 10 billion years, ending in a collapse known as the Big Crunch. These conclusions come from a new theoretical study, currently in preprint and awaiting peer review, that presents a bold reinterpretation of how cosmic forces years, physicists assumed dark energy was steady and uniform, based on a simple number called the cosmological constant in Einstein's general relativity. But the latest analysis challenges that view. The study, reported by introduces two components behind dark energy: the cosmological constant and a particle known as the axion. Axions are hypothetical ultralight particles that rarely interact with matter. Yet, they could fill the universe and account for much of its current accelerated expansion. The cosmological constant, by contrast, is a fixed energy value in empty space. But in this model, it's not positive. It's team behind the research explained their reasoning clearly. 'We are living in a temporary period of accelerated expansion,' they wrote. 'It is heavily driven by the axion field.'Right now, axions are doing most of the work in keeping the universe expanding. But over time, these particles are expected to lose their influence. Once they fade, the negative cosmological constant will begin to dominate. This shift would decelerate the universe's expansion could not only stop but happens next? According to the model, gravity would begin to pull everything back in. Galaxies would start to draw closer, merge, and collapse into each other. Temperatures would rise. Space would grow smaller, hotter, and the final act, all matter and energy would compress into a single point — a singularity. This collapse, termed the Big Crunch, is effectively the reverse of the Big Bang. The study predicts the beginning of this reversal could occur in 10 billion years. The contraction would then take another 10 billion years to complete. The full lifespan of the universe, under this model, would be about 33.3 billion already 13.8 billion years into that DES and DESI surveys have mapped millions of galaxies to measure how the universe expands over time. These surveys are central to modern cosmology, offering one of the most detailed views of the universe's large-scale recently, all observations supported the idea that dark energy was constant. But the new data show signs that it might be insight gave rise to the axion-dark energy model, or aDE, a theoretical framework that incorporates both axions and a changing cosmological explained by 'One of the most striking findings in the new study is the possibility that the cosmological constant — which reflects the energy density of space itself — may be negative.'The study's authors are careful not to overstate their findings. The model, while compelling, is still under review and not confirmed.'These are preliminary findings,' the researchers acknowledged. They stress that deeper space surveys and next-generation telescopes will be crucial for testing whether dark energy really does evolve with the idea is already sparking serious debate among physicists. If it holds, it would force scientists to rethink the universe's timeline — and its theories go further. They suggest the Big Crunch might not be the absolute that final singularity could trigger another Big Bang. A fresh cycle. A new universe. Though these ideas remain speculative, they reflect just how much we still don't understand about the nature of now, the only certainty is that the universe might be less predictable than once believed. As astronomers dig deeper into the skies, the answers we get may continue to surprise us.


Time of India
3 days ago
- Time of India
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Economic Times
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APJ Abdul Kalam's 10th death anniversary: Remembering the man who taught India to dream through his life, ideas and words
File Photo: Dr APJ Abdul Kalam On 27 July 2015, India lost one of its most beloved public figures. Dr APJ Abdul Kalam collapsed mid-lecture at IIM Shillong and died shortly after from cardiac arrest. He was news hit hard. Not just in government offices or scientific circles, but in schools, homes and colleges across the marks nine years since that moment. A day people still recall with clarity and India pauses to remember him, his legacy remains more relevant than Pakir Jainulabdeen Abdul Kalam was born on 15 October 1931, in Rameswaram, Tamil Nadu. The youngest of five, his family led a modest life. To support them, Kalam sold newspapers as a boy. He studied by lamp-light, often late into the night. He wasn't just a curious student, but a determined earned a physics degree from St Joseph's College in 1954, then studied aeronautical engineering at the Madras Institute of early years weren't easy. But they shaped the man who would one day launch missiles and shape young joined the Defence Research and Development Organisation (DRDO) in 1958. In 1969, he moved to the Indian Space Research Organisation (ISRO). That's where he led the team behind SLV-III, India's first satellite launch vehicle, which successfully placed the Rohini satellite into returned to DRDO in the 1980s and headed the Integrated Guided Missile Development Programme. It was here that he helped develop the Agni and Prithvi missiles. This earned him the title that would stick for life, the 'Missile Man of India'. He also played a key role in planning and executing the Pokhran-II nuclear tests in 1998 under Prime Minister Atal Bihari Vajpayee. This put India firmly on the world's nuclear map. In 2002, Dr Kalam defeated Lakshmi Sahgal to become India's 11th was the first Muslim to complete a full term in the post. And more significantly, he redefined the made it about travelled constantly, spoke to students, wrote books, and pushed conversations about science, education and development. He had a message, especially for the young:"Dream, dream, dream. Dreams transform into thoughts and thoughts result in action."Many still call him the 'People's President'. Not as a label, but as a lived after leaving Rashtrapati Bhavan, Kalam never slowed down. He kept writing, teaching, and speaking. His books like Wings of Fire, Ignited Minds, and India 2020 remain popular. He didn't just talk about change, he tried to make it happen. He worked with Dr Soma Raju to create a low-cost stent for heart patients, named the Kalam-Raju stent. He also championed rural healthcare, sustainable development, and youth 1992 and 1999, he was the Principal Scientific Advisor to the Prime Minister and served as DRDO received the Padma Bhushan in 1981, the Padma Vibhushan in 1990, and the Bharat Ratna in universities and institutions awarded him honorary never changed him. He remained simple, accessible and focused on the next the evening of 27 July 2015, Dr Kalam was at IIM Shillong, speaking on "Creating a Livable Planet Earth".Midway through his lecture, he collapsed. A massive heart attack took him body was flown to Rameswaram. Thousands, including Prime Minister Narendra Modi, paid their last he never really left. Not in spirit. His ideas still echo in classrooms, laboratories and policy Kalam believed in action. In learning. In resilience. He often shared this with young people. Here are some of his most memorable quotes, in his own words: "Never stop fighting until you arrive at your destined place, the unique you. Have an aim in life, continuously acquire knowledge, work hard, and have perseverance to realise the great life." "Determination is the power that sees us through all our frustrations and obstacles. It helps us with building our willpower, which is the very basis of success." "If you want to shine like a sun, first burn like a sun." "Man needs his difficulties because they are necessary to enjoy success." "Let us sacrifice today so that our children can have a better tomorrow." "Failure will never overtake me if my determination to succeed is strong enough." "To succeed in your mission, you must have single-minded devotion to your goal." "If you fail, never give up because FAIL means — First Attempt In Learning." "Youth should not accept any compromise or lower their sights. A society that makes its youth crawl in conformity and enforces dogmas on their aspirations can never flourish." "The best brains of the nation may be found on the last benches of the classroom." "Look at the sky. We are not alone. The whole universe is friendly to us and conspires only to give the best to those who dream and work." "Those who cannot work with their hearts achieve a hollow, half-hearted success that breeds bitterness all around." "Educationists should build the capacities of the spirit of inquiry, creativity, entrepreneurialism, and moral leadership among students and become their role models." "We will be remembered only if we give to our younger generation a prosperous and safe India, resulting from economic prosperity coupled with civilisational heritage." Dr Kalam was a scientist. A teacher. A president. But above all, he was someone who believed in potential — especially in the potential of India's years since his passing, the country still draws strength from his life and his words. His vision was always bigger than the that is what continues to move people, to think, to act, and to believe in something better.