Stephen Hawking, a great, very intelligent man, who contributed magnificent volumes on knowledge to the astrophysics community, has passed away, aged 76. It is a very unfortunate loss, and I'm deeply saddened by this, as I assume most will be.
RIP Hawking, thanks for your life's work and great enthusiasm for the work you've done.
Source:
http://www.bbc.com/news/uk-43396008