The feature in question is in the GD-1 stellar stream, a thin group of stars moving together on a shared trajectory through the Milky Way's all-encompassing halo. The GD-1 stellar stream has been ...
extending far beyond its stars and planets. It’s like a big, invisible halo of gas that can stretch for hundreds of thousands of light-years. In 2011, findings from the Hubble telescope allowed ...
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