It was edited by Rebecca Ramirez and Berly McCoy. This episode was produced by Rachel Carlson. But there are times where we need to quiet down, take a break and really think through things clearly and slowly." "I think that's something we need to learn from them-that it's important to just have times where we're really excited to discover things. So too, are lessons from these galaxies, which Moreno notes alternately go through periods of brightening and dimming. NASA receives more data from the James Webb Space Telescope everyday-and with additional data comes possibilities for new solutions.īut for Moreno, pausing for reflective moments about the conclusions we make based on observations are also important. Pausing to take in ancient, galactic wisdom If it were true, scientists would be able to prove it through the direct observation of stars and galaxies that are older than 13.8 billion years old-the current accepted age of the universe. Moreno also cautions people against quickly jumping on this supposition that the universe is twice as old as previously thought. "I think in science, if you already have a model that's simpler than that, you should stick to it-unless you have extraordinary evidence to do otherwise." Moreno says that while he thinks that combining the models is clever, it is not supported by scientific evidence. It's called the tired light model, and it alleges that as light travels across the universe, it gets redder because it gets "tired," or loses energy. The other model it is combined with has been debunked. This model explains that as the universe expands, the light from galaxies must travel further and therefore shifts from a bluer to a redder spectrum of light. One is the commonly accepted model for the expansion of the universe. They push the age of the universe from a spry 13.8 billion years old to roughly 26.7 billion years old.Īn article published earlier this year in the journal Monthly Notices of the Royal Astronomical Society came to this conclusion after combining two models of the universe. In an attempt to explain the shockingly bright, highly structured-and possibly quite massive-galaxies existing so early in the timeline of the universe, a researcher has posited that the universe is roughly twice as old as previously believed. ![]() The universe doesn't look a day over 13.8 billion years old The high level of structure and brightness in these galaxies is leading some astrophysicists to question the age of the universe. That wasn't something we really expected." "They seem to have added structure and maybe even spiral arms. "Some of them look a lot like galaxies in the local universe," he says. But Moreno and other astronomers like him are excited to now be studying what look like pretty highly structured galaxies. ![]() ![]() Instead, astronomers thought the galaxies would be. Until now, scientists thought that any galaxies from this relatively early period in the history of the universe would have been too young to have been forced into that binary yet. Most galaxies are separated into two types: spirals, which are disk-like with arms of dust and gas and ellipticals, which are more like spheres of smooth light. When young galaxies are advanced for their age
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