Linear-response TDDFT and supercell core-hole calculations of electron energy-loss spectra in polymorphic HfO<sub>2</sub>

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It's not yet clear why researchers decided to point Webb in its direction, but little is known about the nebula, including the mass of the star creating it. That matters because a more massive star could eventually explode as a supernova, while a smaller, sun-like star would keep shrugging off layers of material until only a dense core remains and cools over time.

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Arsenal’s journey under Mikel Arteta has long been a reference point for Chelsea’s owners. It is part of the club’s shift towards youth and potential after the Roman Abramovich era. Chelsea have built with a long-term view and, seeing how Arteta has reversed Arsenal’s decline since his appointment as manager in December 2019, have been keen to find a young coach capable of becoming a similarly galvanising force at Stamford Bridge.

More than half the £101m spend has been on legal fees – including bringing in external lawyers.

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