Complex sentence: An additional award was given in 2007 and 2008, named after and presented by George Abbey, the former director of the Johnson Space Center, awarded to those "whose space achievement made us laugh the most".
Split into simpler sentences: An additional award was given in 2007 and 2008 that was named after and presented by George Abbey, the former director of the Johnson Space Center. It was awarded to those "whose space achievement made us laugh the most".