He passed away at the age of 76, BBC quoted a spokesman for his family as saying.
"He was a great scientist... whose work and legacy will live on for many years", his children said in a statement.
The Nobel Prize-winning author was an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge.
A multi-billion shilling government investment has connected over 1.18 million new households to electricity since 2022, bringing power to more than 10 million Kenyans under the Last Mile Connectivity Project, a government report reveals.
After news of his death broke, Kenyans from all walks of life, including political leaders, activists and ordinary citizens, took to social media to express their sorrow and celebrate his outstanding contribution to the nation.