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Fastest archery underwater

The record for the fastest time to successfully complete three circuits of an underwater archery course is 1 min 4 sec and was set by Yohann Belpre (France) on the set of L’Ete de Tous les Records, in La Tranche Sur Mer, France on 25 July 2005.

Fastest atmospheric entry

On 7 December 1995, a small probe released by the Galileo spacecraft began a fiery descent into the atmosphere of the giant planet Jupiter. During this most difficult atmospheric entry ever, the Galileo probe reached a speed of 170,000 km/h (106,000 mi/h). During its entry, the probe was subjected to a deceleration force of around 230 times Earth’s gravity.

Fastest avalanche

The volcanic explosion of Mt. St. Helens on May 18, 1980, triggered the fastest recorded avalanche in history on the mountains north slope.  The velocity reached was 402.3km/h 250mph.

Fastest ATV side-wheelie

The fastest ATV side-wheelie is 75.6 km/h (47 mph) by Travis Pastrana (USA) at Miller Motorsports Park in Tooele, Utah, USA, on 18 November 2008 for the MTV show ‘Nitro Circus’. The GWR episode will air January 2009.

Fastest atomic clock

A team of physicists at the National Institute of Standards and Technology in Boulder, Colorado, USA have developed an atomic clock that ‘ticks’ about a quadrillion (10 to the 15th) times per second. Eventually it is hoped that this clock will be accurate to 1 second in 30 billion years. This means that the clock would not even lose one second over the entire age of the universe. The clock works by using the frequency of oscillation of one ion of mercury at optical wavelengths. Continue reading →