Our satellite is a little off-balance. GRAIL data show a mass asymmetry of a few percent between its near and far sides.

An inversion layer has been causing dense fog since Sunday evening throughout the region’s valleys, including the Ogden area. Glen Merrill, hydrologist with the National Weather Service’s Salt ...

Look again to the southwest after dark to see a 32%-lit waxing crescent moon closing in on Jupiter, the brightest planet in the night sky. Today, our natural satellite in space reaches its First ...