The second day of the omnium begins with the time trial over 1km at 2.20pm (BST) today, Monday, followed by the flying lap, a race against the clock over 200 metres with a flying start, at 8pm this evening and the final event, the 40km points race at 9.23pm. The South Korean rider was strapped to a backboard and left on a stretcher.
Hansen, who won the event in 2012, took bronze with 192 points, two fewer than Cavendish. Cavendish fumed after failing to win the Madison in Beijing before being denied in the road race at London 2012.
Turkish and Russian presidents meeting raise eyebrows
Putin had said the two men would discuss how to restore trade and economic ties, and cooperation against terrorism. An "axis" between Moscow and Ankara would be a victory for Putin, also in terms of resolving the Syrian crisis.
After a sixth placed finish in the 15km Scratch Race and a seventh placed result in the Elimination Race (he was penalised for overtaking on the inside), Cav excelled in the 4km Individual Pursuit.
But it would have looked even more promising if he had stayed in contention for longer in the elimination race.
Green pool to be drained, refilled for synchronized swimming
British diver Tom Daley, who won bronze in the synchro platform event, also commented on the state of the pool in a Twitter post. Water at the Rio de Janeiro Olympic diving pool turned a murky shade of green overnight Monday.
Twitter users were, however, quick to compare Cavendish, who adds Olympic silver to his 34 Tour de France stage wins, 15 Giro wins, a world championship and Commonwealth gold, to former Formula One great Michael Schumacher, who was never afraid of employing ultra aggressive tactics to force his way into a winning position.
Becky James and Katy Marchant, meanwhile, have completed their day's work, progressing to Tuesday's women's sprint quarter-finals at the first attempt.
Millions of Keyless Volkswagen Cars are at Risk of Wireless Hacks
With equipment costing as little as £30 the signal and be cloned and the hacker can then access the vehicle in future. Meanwhile, VW says that it has switched system in its most recent models, closing the loophole.
An Olympic medal had always eluded him but, after eight years of trying and at the third time of asking, his drought was finally ended at Rio 2016 when he finished second in the overall omnium standings following a battling display in the final points race.