I apologize for the incorrect response. The Mars Odyssey spacecraft was not launched in 2001 but in 2001. It was launched by NASA on April 7, 2001, and successfully reached Mars on October 24, 2001.

Mars Odyssey is an unmanned spacecraft designed to study the Martian environment and gather data about the planet. Its primary mission objectives include mapping the surface of Mars, analyzing the planet`s climate and weather patterns, studying the distribution of water ice, and searching for evidence of past or present water and volcanic activity on Mars.

The spacecraft is equipped with various scientific instruments, including a thermal emission imaging system, a gamma-ray spectrometer, and a neutron spectrometer, among others. These instruments enable scientists to gather valuable data and images of Mars, helping to deepen our understanding of the planet`s geological and atmospheric processes.

Mars Odyssey has been highly successful in its mission, providing crucial data and insights into the Martian environment. It continues to operate and collect data to this day, contributing to ongoing research and future missions to Mars.