Space An oblique view of Rimae Hippalus on the Moon, showing the extent of the grabens, which span over 250 kilometers. The image width is roughly 150 kilometers at the bottom, and 500 kilometers on the horizon. The central peak crater Campanus (46-kilometer diameter) is in the right foreground.March 3, 2026
Space How fast is the universe actually expanding? Ripples in spacetime could finally solve ‘Hubble tension’March 3, 2026
