Leaving so soon? Unusual planetary nebula fades mere decades after it arrived
University of WashingtonUsing images from the Hubble Space Telescope, astronomers have discovered that the Stingray Nebula, the youngest planetary nebula in our sky, has faded dramatically over the course of just 20 years. If dimming continues at current rates, in 20 or 30 years the Stingray Nebula will be barely perceptible.