Scientists have been puzzled for a long time about how a huge star-shaped sand dune in the Sahara Desert formed. This massive dune, called a "star dune," has arms that stretch out in different ...

Jakarta isn’t sinking in decades—it’s sinking right now. Entire districts have already dropped more than 13 feet, while ...

A technique called interferometry can greatly magnify tiny objects on the sky, and is powerful enough to reveal the surfaces ...