1 min read
MGS/TES June-August Sequence

About the Object
- DistanceDistanceThe physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.At the 2001 Mars opposition, the planet was approximately 43 million miles (68 million km) from Earth.
- DimensionsDimensionsThe physical size of the object or the apparent angle it subtends on the sky.The planet has a diameter of 4,222 miles (6,794 km) at the equator.
About the Data
- Data DescriptionData DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.Principal Scientists: P. Christensen (Arizona State University) - InstrumentInstrumentThe science instrument used to produce the data.Mars Global Surveyor (MGS)>Thermal Emission Spectrometer (TES)
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.June 17 - August 26, 2001
- FiltersFiltersThe camera filters that were used in the science observations.Infrared wavelengths: 2.3 - 15.4nm
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.Mars
- Object DescriptionObject DescriptionThe type of astronomical object.Planet, Global Dust Storm
- Release DateOctober 11, 2001
- Science ReleaseScientists Track “Perfect Storm” on Mars
- CreditPhilip Christensen (Arizona State University) and the TES Team
Related Images & Videos

Scientists Track "Perfect Storm" on Mars
Two dramatically different faces of our Red Planet neighbor appear in these comparison images showing how a global dust storm engulfed Mars with the onset of Martian spring in the Southern Hemisphere. When NASA's Hubble Space Telescope imaged Mars in June, the seeds of the storm...

Animation from the Thermal Emission Spectrograph (10 frames per second )
Beginning with clear skies (represented by blue), the storm gathers in size and intensity. This animation represents atmospheric data from the Mars Global Surveyor's Thermal Emission Spectrograph. As the dust clouds grow thicker, they absorb more warmth from the sun and raising...

Animation from the Thermal Emission Spectrograph (6 frames per second )
Beginning with clear skies (represented by blue), the storm gathers in size and intensity. This animation represents atmospheric data from the Mars Global Surveyor's Thermal Emission Spectrograph. As the dust clouds grow thicker, they absorb more warmth from the sun and raising...

Animation from the Thermal Emission Spectrograph (4 frames per second )
Beginning with clear skies (represented by blue), the storm gathers in size and intensity. This animation represents atmospheric data from the Mars Global Surveyor's Thermal Emission Spectrograph. As the dust clouds grow thicker, they absorb more warmth from the sun and raising...
Share
Details
Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov