Today is the day, 25 years ago, that the Hubble space telescope launched from the Kennedy Space Centre aboard the Space Shuttle Discovery.  The world had high hopes for Hubble, but we had no idea what great treasures were waiting for us in the depths of the cosmos.  No piece of technology in human history has, arguably, had a bigger impact on our understanding of the Universe. For the 25th anniversary, International Astronomy day is coinciding to tomorrow’s anniversary of the deployment of Hubble, since it usually falls on a Saturday.  Events across the world will include arts and crafts, Astronomy demonstrations,...