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September 25 in history: Launch of Mars Observer, IRA's surrender of arms and more

1915
1 / 5

1915

WWI: The Second Battle of Champagne begins

1978
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1978

Collision between a Cessna & Pacific Southwest Airline plane kills 144

1992
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1992

NASA launches Mars Observer

2005
4 / 5

2005

IRA gives up its arms in front of independent weapon inspectors

2008
5 / 5

2008

China launches its third manned mission Shenzhou7