MGS Thermal Emission Spectrometer Image
September 29, 2003
This image shows the temperature of the martian surface measured by the Mars Global Surveyor Thermal Emission Spectrometer (TES) instrument. On September 15, 3 hours and 48 minutes after the spacecrafts third close approach to the planet, the TES instrument was commanded to point at Mars and measure the temperature of the surface during a four minute scan. At this time MGS was approximately 15,000 miles (~24,000 km) from the planet, with a view looking up from beneath the planet at the south polar region. The circular blue region (- 198 F) is the south polar cap of Mars that is composed of CO2 ice.
Topics: Environment, Spectrometers, Spacecraft, Space exploration, Thermal Emission Spectrometer, Thermal infrared spectroscopy, Mini-TES, Mars Global Surveyor, Mars landing, Mars