An American man is guaranteed a place in the Cincinnati Open final after Frances Tiafoe and Brandon Nakashima won their quarterfinal matches on Friday....
Scientists have discovered S301, a star traveling at 8% of the speed of light around the black hole at the center of the Milky Way. Its orbit could help test Einstein’s theory of relativity and reveal how quickly Sagittarius A* rotates.
Unfortunately, the break in the rain won't last. Costa Rica's National Meteorological Institute expects instability to build over the weekend, and Saturday is shaping...
