Raghvendra Sahai

At the center of a cosmic dust cloud, astronomers detected an invisible star. It's wrapped in a rotating gas disk. This disk works like a set of scales: the gas speed at different distances from the center reveals the star’s mass. The pattern is simple: the closer to the center, the faster the motion.

In a blazing foundry, any ice cube would vanish instantly. But tucked inside a thick mitten, it survives. Nature pulled a similar trick in the planetary nebula NGC 6302.