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Why is the universe ripping itself apart? A new study of exploding stars shows dark energy may be more complicated than we thought

The remains of a Type Ia supernova – a kind of exploding star used to measure distances in the universe. NASA / CXC / U.Texas, CC BY Brad E Tucker, Australian National University What is the universe made of? This question has driven astronomers for hundreds of years. For the past quarter of a century, scientists have believed “normal” stuff like atoms and molecules that make up you, me, Earth, […]

todayJanuary 9, 2024 11

Science & Technology

Do we live in a giant void? It could solve the puzzle of the universe’s expansion

Pablo Carlos Budassi/wikipedia, CC BY-SA Indranil Banik, University of St Andrews One of the biggest mysteries in cosmology is the rate at which the universe is expanding. This can be predicted using the standard model of cosmology, also known as Lambda-cold dark matter (ΛCDM). This model is based on detailed observations of the light left over from the Big Bang – the so-called cosmic microwave background (CMB). The universe’s expansion […]

todayDecember 1, 2023 3