Using the Mayall 4-meter telescope at Kitt Peak National Observatory, an international team of astronomers has observed C-19—an extremely metal-poor stellar stream in the Milky Way's halo. Results of ...
Recent disruptions to oil supply in the Middle East have sent energy prices soaring, reminding countries how vulnerable they remain to imported fossil fuels. At the same time, global electricity ...
Learn more about a new algorithm that helped reveal 87 stellar streams and what it could reveal about dark matter. In a night sky with more space than stars, globular clusters are bright exceptions.
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