Ghostly Orb Is Dying Star's Final Farewell

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online Underwater 'Stonehenge' Monolith Found Off Coast of Sicily A mysterious Stonehenge-style monolith sheds new light on the earliest civilizations in the Mediterranean basin. READ MORE Ghostly Orb Is Dying Star's Final Farewell A dying star has left behind a beautiful, if temporary, parting gift -- an expanding planetary nebula. READ MORE WATCH VIDEO: X-rays From Stars Make Music Stars can make some beautiful sounds -- with the help of scientists. Photos: Putting the Art in Artificial Intelligence: Google's Deep Dream A.I. creates original imagery by running pictures through an artificial neural network. But can machines really create art? READ MORE WATCH VIDEO: Will Artificial Intelligence Destroy Us? An article by Stephen Hawking says AI could lead to the downfall of humanity. Why Is Trophy Hunting Legal? 10 million Americans spend a lot of money to hunt big game. Given the danger of extinction so many species face, why is it still allowed? WATCH Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! At Discovery Communications, we value your privacy. If you would like to be removed from future communications like this, please click here. Privacy Policy Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © Copyright 2015 Discovery Communications, LLC