NASA admits the Mars Opportunity rover is dead
The explorer didn't respond to one last attempt at contact.
Hubble telescope 'mother' Nancy Grace Roman dies
She was also NASA's first woman executive.
Early internet pioneer Larry Roberts dies at 81
He lead the team that created ARPAnet.
HQ Trivia and Vine co-founder Colin Kroll dies of apparent overdose
The controversial executive was just 34.
Marvel legend Stan Lee dies at 95
He had a tremendous impact on comics, games and movies.
Microsoft co-founder Paul Allen dies from cancer at 65
His legacy extends well beyond his software roots.
Sci-fi writer Harlan Ellison dies at 84
The 'Star Trek' and 'Babylon 5' scribe passed away in his sleep.
Stephen Hawking passes away at age 76
The physicist was known for his work on black holes and relativity.
Activist and EFF co-founder John Perry Barlow has died
He was 71.