Today is 28th January’10 and here’s what happened today in tech…

1 - In 1878. 1st telephone exchange (New Haven, CT).
2 - In 1958. Construction began on 1st private thorium-uranium nuclear reactor.
3 - In 1958. 1st photograph bounced off Moon, Washington DC.
4 - In 1986. 25th Space Shuttle (51L)-Challenger 10 explodes 73 sec after liftoff.