Curiosity‍‍’​‍s design will serve as the basis for the planned Mars 2020 rover. In December 2012, Curiosity‍‍’‍s two-year mission was extended indefinitely.

Curiosity is a car-sized robotic rover exploring Gale Crater on Mars as part of NASA’s Mars Science Laboratory mission. Curiosity was launched from Cape Canaveral on November 26, 2011, at 15:02 UTC aboard the MSL spacecraft and landed on Aeolis Palus in Gale Crater on Mars on August 6, 2012, 05:17 UTC. The Bradbury Landing site was less than 2.4 km (1.5 mi) from the center of the rover’s touchdown target after a 563,000,000 km journey.

The rover’s goals include: investigation of the Martian climate and geology; assessment of whether the selected field site inside Gale Crater has ever offered environmental conditions favorable for microbial life, including investigation of the role of water; and planetary habitability studies in preparation for future human exploration.

As established by the Mars Exploration Program, the main scientific goals of the MSL mission are to help determine whether Mars could ever have supported life, as well as determining the role of water, and to study the climate and geology of Mars. The mission will also help prepare for human exploration. To contribute to these goals, MSL has eight main scientific objectives.


  • Determine the nature and inventory of organic carbon compounds
  • Investigate the chemical building blocks of life (carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur)
  • Identify features that may represent the effects of biological processes (biosignatures and biomolecules)

Geological and geochemical

  • Investigate the chemical, isotopic, and mineralogical composition of the Martian surface and near-surface geological materials
  • Interpret the processes that have formed and modified rocks and soils

Planetary process

  • Assess long-timescale (i.e., 4-billion-year) Martian atmospheric evolution processes
  • Determine present state, distribution, and cycling of water and carbon dioxide

Surface radiation

  • Characterize the broad spectrum of surface radiation, including galactic and cosmic radiation, solar proton events and secondary neutrons. As part of its exploration, it also measured the radiation exposure in the interior of the spacecraft as it traveled to Mars, and it is continuing radiation measurements as it explores the surface of Mars. This data would be important for a future manned mission.

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