Gary Steigman, Who Teased Out the Universe’s Dark Secrets, Dies at 76 by DENNIS OVERBYE

By DENNIS OVERBYE Dr. Steigman helped show that most matter in the universe was not made of atoms, a finding that led to modern conceptions of dark matter and dark energy. Published: April 26, 2017 at 08:00PM from NYT Science http://nyti.ms/2qeYa0v