In the nearby galaxy NGC 4258, the well-modeled orbital motion of H2O masers about its supermassive black hole provides the means to measure a precise geometric distance. As a result, NGC 4258 is one ...
Breaking out of the debt cycle isn’t easy. According to research by Empower, 37% of Americans can’t cover a $400 emergency expense without borrowing money or dipping into their savings. And a ...
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