12/01/2005 Deep Impact probe is launched to Tempel 1 comet
Preview to launch of Deep Impact meteorite probe
NASA's Deep Impact mission
NASA to launch deep impact probe on comet
The target of the probe was was periodic comet Tempel 1 from the Jupiter family. Deep impact released a projectile into the core of the comet. The impact energy was 19 GJ, which corresponds to 4.5 tons of TNT. The collision was visible from Earth. The probe studied the material released after the blast. Its mission was later extended. She observed several other comets.