It’s the final hours for the Hourglass Nebula, as the central star runs out of nuclear fuel and becomes a white dwarf. And wow, don’t those dying embers look like an unblinking gaze of evil?
This new Hubble Space Telescope image shows the rings of flowing gases outlining the fading walls of the nebula’s “hourglass.” Nitrogen is shown in red, hydrogen in green, and oxygen in blue. Image by AFP/Getty/NASA. [via SFGate]
