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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 …

For once, let’s break with the usual advice and tell you that you should look at the Sun. Specifically, in the new NASA activity video over the 10-year time span on the solar surface. Lasting 61 minutes in total, the impressive video has been produced from high-resolution images captured by …