SUNSET: 
The Passing of John Glenn
John Glenn, the first American to orbit Earth, dies at 95.
Antonín Rükl, 1932–2016
A world-renowned lunar cartographer, whose beautiful atlases have become prized possessions, has died at age 83.
Donald C. Parker, 1939-2015
Donald C. Parker, a planetary imaging pioneer, passed away in Miami, Florida on February 22, 2015.
Bill Bradfield, Comet Hunter Extraordinaire (1927-2014)
The prolific comet hunter William A. Bradfield tallied 18 comets in his lifetime, each discovered visually and credited to him alone.
Jean Texereau, Master Optician
In France, one of the giants of telescope making has died. He shared his years of professional experience with amateurs around the world.
John Dobson, 1915-2014
Ask any long-time stargazer who has had the greatest impact on amateur astronomy, and the name of this barnstorming, telescope-making revolutionary will surely come up.
Remembering Tom Gehrels (1925-2011)
Dutch-born planetary scientist and asteroid hunter Tom Gehrels passed away on July 11th. Sky & Telescope contributing editor Govert Schilling shares his memories of a unique person.
Janet Akyüz Mattei (1943–2004)
Janet Mattei served as director for the American Association for Variable Star Observers for 30 years.
