Neil Gehrels

Cornelis A. "Neil" Gehrels (October 3, 1952 – February 6, 2017) was an American astronomer. He worked in the field of Gamma ray astronomy. He was the Chief of the Astroparticle Physics Laboratory at NASA's Goddard Space Flight Center from 1995 until his death.
Gehrels was born in Lake Geneva, Wisconsin. He grew up in Tucson, Arizona. His father, Tom (1925–2011), was also an astronomer.
Gehrels died on February 6, 2017 at the age of 64.