Deep Impact File

On July 3, 2005, the Impactor separated from the Flyby and began its journey to the comet. At 5:44 UTC on July 4, 2005, the Impactor crashed into the comet’s surface, creating a massive crater estimated to be about 100 meters (330 feet) in diameter and 2-3 meters (6-10 feet) deep. The impact released an enormous amount of energy, equivalent to about 4.8 tons of TNT.

The success of the Deep Impact mission has paved the way for future comet missions. NASA’s Stardust mission, launched in 1999, flew by Comet Wild 2 and returned samples of comet particles to Earth. The European Space Agency’s Rosetta mission, launched in 2004, orbited and landed on Comet 67P/Churyumov-Gerasimenko in 2014. Deep Impact

The target of the Deep Impact mission was Comet Tempel 1, a periodic comet discovered in 1867 by German astronomer Wilhelm Tempel. The comet orbits the Sun every 5.5 years, and its perihelion (closest approach to the Sun) is about 1.4 astronomical units (AU). Comet Tempel 1 is a relatively small comet, measuring about 6 kilometers (3.7 miles) in diameter. On July 3, 2005, the Impactor separated from