The U.S. Air Force successfully launched their ‘secret’ X-37B Space Shuttle today (at 9.52 pm AEST 23 April 2010).
The X-37B was initially developed by NASA, and then cancelled due to budget concerns. The U.S. Air Force took over the project and today is the first launch of the X-37B. While we know about the spacecraft from NASA initially developing it, it we don’t know what its mission is. Hence the use of the word ‘secret’ in brackets.
More on the X-37B can be found here.
I will post an update on when we can see the X-37B pass overhead in the night sky.