worrisome is the fact that the data analyzed include abundant and common bird species such as the great tit (Parus major), the cerrojillo flycatcher ( Ficedula hypoleuca ) and the common magpie ( Pica pica ), which until now were believed to respond relatively well to climate change. “A practical application that derives from this study is the need to carry out selection analysis of this type to identify the real risk of extinction of the species,” adds Avilés. Therefore, it would be necessary to analyze the adaptive responses carried out by rare or threatened species because it is likely that these are even more limited and that the persistence of their populations is affected. The scientists hope that their results and the compilation of the data they have

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carried out will serve to promote studies that deepen Portuguese Timor Email Lists the resilience of animal populations in the face of global change and contribute to improving predictions, with the aim of guiding future actions. on wildlife conservation. The Universe of about 13,000 million years ago was very different from the one we know today. Stars were forming at a dizzying rate, creating the first dwarf galaxies, the merger of which would give rise to today’s most massive galaxies, including our own. However, the exact chain of events that shaped the Milky Way was a mystery – until now. Precise position, brightness and distance measurements for approximately one million stars in our Galaxy within 6,500 light years around the Sun, provided by the Gaia space telescope,


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an IAC team to glimpse its early stages. “We have analyzed and compared with theoretical models the distribution of colors and magnitudes (brightness) of stars in the Milky Way, differentiating between several components: the so-called stellar halo (a spherical structure that surrounds spiral galaxies) and the thick disk (stars belonging to the disk of our Galaxy, but at a certain height) ”, points out Carme Gallart, IAC researcher and first author of this article, published today in the journal Nature Astronomy . Previous studies had found that the galactic halo showed unequivocal signs of being made up of two distinct stellar components, one dominated by stars that are bluer than the other. The way of moving of the stars of the blue component soon

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