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HD 140283 is a subgiant star estimated to be 14.46 billion years old. That may raise an eyebrow or two among those who recall the universe ’s estimated age of 13.77 billion years. This star, commonly referred to as the Methuselah star, seems to be older than the cosmos itself. At times, such an uncommon discovery causes us to reconsider our understanding of the cosmos and typically results in a revolution in our cosmological theories. That is not the case at the moment. To understand why we must examine how we calculate the age of a star of this kind. The majority of stars grow in a predictable manner. A protostar gravitationally collapses, causing hydrogen to fuse in its core and transforming it into a true star. The star enters what is known as the main sequence, where it remains a stable star for billions of years (depending on its size). As it depletes its hydrogen, it transitions to a red giant or comparable stage before exploding as a supernova/white dwarf/etc., dep...

In November 2018, three physicists from the prestigious Perimeter Institute for Theoretical Physics, in Waterloo, Canada, proposed an extraordinary idea: from the Big Bang not only the Universe we know but also another one that is ‘its image in the mirror’ arose. A Universe in which everything happens backward and expands backward in time. From our point of view, in effect, that Universe ‘on the other side of the Big Bang’ advances… into the past. In an article then published in ‘ Physical Review Letters ‘, the physicists Latham Boyle, Keran Finn, and Neil Turok thus argued that the Universe we live in is only a part of the real Universe and that if so two of the largest problems facing physicists (namely, dark matter and inflation) would cease to make sense. In fact, dark matter, the mysterious substance that accounts for almost a third of the mass of the Universe and that scientists are unable to observe, would be nothing more than ...

Discoveries from the James Webb Space Telescope are pouring in, with an analysis of the latest data revealing a galaxy that dates back to just 300 million years after the big bang – the oldest we have ever seen Space 20 July 2022 GLASS-z13 is the oldest galaxy ever seen Naidu et al, P. Oesch, T. Treu, GLASS-JWST, NASA/CSA/ESA/STScI Just weeks into its mission, the James Webb Space Telescope (JWST) has broken the record for the oldest galaxy ever observed by nearly 100 million years. Seeing some of the first galaxies to form after the big bang 13.8 billion years ago is one of the key goals of the JWST. When these emerged is currently unknown: the previous oldest identified galaxy , found by the Hubble Space Telescope, is called GN-z11 and dates back to 400 million years after the birth of the universe . … No commitment, cancel anytime* Offer ends 14th March 2023. *Cancel anytime within 14 days of payment to receive a refund on unserved issues. Existing subscribers, ...

Just imagine that future human s may be able to Travel to distant planets and discover… more human s. According to one astrobiologist at the University of Cambridge, that possibility may be more realistic than you think. In a new interview with the BBC’s Science Focus magazine, Simon Conway Morris, an evolutionary palaeobiologist at the institution’s Department of Earth Sciences, stated that scientists can “say with reasonable certainty” that human-like evolution has occurred in other locations throughout the universe. Morris’ opinion is based on the convergent evolution theory, which asserts that “random effects eventually average out to the point where evolution converges, tending to create similar creatures in any given environment.” The magazine cited flight as an example, noting that it “has evolved independently at least four times on Earth — in birds, bats, insects, and pterosaurs.” This means that convergent ...

Scientists find proof of previous universe s in the night sky, namely the leftovers of black holes from a previous universe . According to New Scientist, the concept is based on something known as conformal cyclic cosmology (CCC). What it means is that our universe , rather than beginning with a single Big Bang, goes through continual cycles of Big Bangs and compressions. While the vast majority of the cosmos would be annihilated from one cycle to the next, these scientists claim that some electromagnetic radiation may survive the recycling process. Their findings have been published on arXiv. “What we claim we’re seeing is the final remnant after a black hole has evaporated away in the previous aeon,” University of Oxford mathematical physicist Roger Penrose, a co-author on the study and co-creator of CCC theory, told New Scientist. The evidence is presented in the form of “Hawking points,” which are named after the late Stephen Hawking. He hypothesised that blac...