NASA has completed the $8.7 billion James Webb space telescope - Hubble's successor is ready for testing ahead of the October, 2018 launch - It's equipped with a 21-foot, gold-coated mirror array that can collect seven times more light than Hubble and scan the infrared spectrum to see through dust. • /r/worldnews

NASA has completed the $8.7 billion James Webb space telescope - Hubble's successor is ready for testing ahead of the October, 2018 launch - It's equipped with a 21-foot, gold-coated mirror array that can collect seven times more light than Hubble and scan the infrared spectrum to see through dust. via Pocket http://ift.tt/2eHUVLe