A tiny, mysterious galaxy 44 million light-years away is finally producing its secrets. Last year turned out to be a shockingly low amount of dark matter, which posed a significant challenge to our models of the Galaxy NGC 1052-DF4A Galaxy formation. Those models still live another day. According to new …
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Spiral galaxies look pretty and orderly, with most of their stars and gas confined to a carefully arranged disk in swirling spiral arms. But there is much more to a galaxy than we can see, as a new image of invisible phenomena skillfully demonstrates. The image shows a galaxy called …
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Image of a spiral galaxy. You are probably imagining something like Messier 34: long, spiral arms that move away from a brilliantly bright center, dotted with sparkling star clusters and dotted with dark streaks of dust. But from our point of view, galaxies can be oriented in any way, including …
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