The ill-fated Beagle 2 probe which was released from the Mars Express Spacecraft on December 19, shortly before its scheduled landing.

• 2003年的今天，12月19号从火星快车上发射的命运多舛的的毕尔格犬2号（或译猎犬2号）探测器在预计登陆前短短的时间内失踪。