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Environment Guru (EUA)
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New species of fish displays striking color difference between males and females
Publicado em 12 dezembro 2017
Adult males of are a deep reddish-orange, while females and juveniles are pale yellow, according to the authors of an article in Journal of Fish Biology describing tetra Hyphessobrycon myrmex. Scientists integrate a Brazilian research project on fish which belongs to Characiformes order living in the headwaters of Amazon rivers, regions whose fluvial biodiversity is potentially threatened by READ MORE
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Astronomers perform largest-ever survey of high-mass binary star systems
Publicado em 19 abril 2017In addition to solo stars like our Sun, the universe contains binary systems comprising two massive stars that interact with each other. In many binaries the two stars are close enough to exchange matter and may even merge, producing a single high-mass star that spins at great speed. Until now the number of known high-mass binaries has been very small, basically confined to those identified in our galaxy, the Milky Way. An international group of astronomers led by researchers at the [...]ver notícia