Hubble celebrates its 25th anniversary with space fireworks
 

To celebrate the Hubble Space Telescope's quarter century of scientific service, both NASA and the European Space Administration (ESA) have published this stunning photograph of Westerlund 2. At just 2 million years old, this 3,000-star cluster conta...

http://www.engadget.com/2015/04/23/h...=rss_truncated