timothy from the plaster-of-mars-would-be-really-expensive dept.
First time accepted submitter RCC42 writes "The Opportunity rover has found evidence that liquid water once flowed on Mars, through the discovery of gypsum — a mineral that can only be formed in the presence of water. Though other evidence in the past has suggested highly acidic water on Mars, this is the first evidence for water with a pH suitable for life as we know it."
If a 6600 used paper tape instead of core memory, it would use up tape
at about 30 miles/second.
-- Grishman, Assembly Language Programming