|
Collection:
|
|
NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
|
|
Title:
|
|
North Polar Ice Cap Surface
Title
North Polar Ice Cap Surface
Title
|
|
Original Caption Released with Image:
|
|
On Mars, Northern Hemisphere Summer (and Southern Hemisphere Winter) began on December 16, 2000. In this December holiday season, many children across the U.S. and elsewhere are perhaps anticipating an annual visit from a generous and jolly red-suited soul from the Earth's North Pole. As the December holidays were approaching, the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) was busy acquiring new views of the region around the martian north pole. The three best views obtained this month are shown here. The top (A) and bottom (C) views show many layers exposed and eroded into the form of ridges and troughs on shallow slopes within the martian north polar cap. The middle (B) view is a picture of the rugged, eroded polar ice cap surface itself. The layers are believed to have formed over tens to hundreds of thousands of years by deposition of dust and ice each cold martian winter. These surfaces today all appear to have been eroded. The brightest material in each image is frost--temperatures at this time of year indicate that the frost is composed of frozen water. In winter, temperatures can be cold enough to freeze carbon dioxide, as well.
Original_Caption_Rel eased_with_Image
On Mars, Northern Hemisphere Summer (and Southern Hemisphere Winter) began on December 16, 2000. In this December holiday season, many children across the U.S. and elsewhere are perhaps anticipating an annual visit from a generous and jolly red-suited soul from the Earth's North Pole. As the December holidays were approaching, the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) was busy acquiring new views of the region around the martian north pole. The three best views obtained this month are shown here. The top (A) and bottom (C) views show many layers exposed and eroded into the form of ridges and troughs on shallow slopes within the martian north polar cap. The middle (B) view is a picture of the rugged, eroded polar ice cap surface itself. The layers are believed to have formed over tens to hundreds of thousands of years by deposition of dust and ice each cold martian winter. These surfaces today all appear to have been eroded. The brightest material in each image is frost--temperatures at this time of year indicate that the frost is composed of frozen water. In winter, temperatures can be cold enough to freeze carbon dioxide, as well.
Original Caption Released with Image
|
|
Image Credit:
|
|
NASA/JPL/MSSS
Image_Credit
NASA/JPL/MSSS
Image Credit
|
|
Produced By:
|
|
Malin Space Science Systems
Produced_By
Malin Space Science Systems
Produced By
|
|
Mission:
|
|
Mars Global Surveyor (MGS)
Mission
Mars Global Surveyor (MGS)
Mission
|
|
Spacecraft:
|
|
Mars Global Surveyor Orbiter
Spacecraft
Mars Global Surveyor Orbiter
Spacecraft
|
|
Target Name:
|
|
Mars
Target_Name
Mars
Target Name
|
|
Is a satellite of:
|
|
Sol (our sun)
Is_a_satellite_of
Sol (our sun)
Is a satellite of
|
|
Instrument:
|
|
Mars Orbiter Camera
Instrument
Mars Orbiter Camera
Instrument
|
|
Product Size:
|
|
2003 samples x 601 lines
Product_Size
2003 samples x 601 lines
Product Size
|
|
Primary Data Set:
|
|
MGS EDRs
Primary_Data_Set
MGS EDRs
Primary Data Set
|
|
Producer ID:
|
|
MOC2-266B
Producer_ID
MOC2-266B
Producer ID
|
|
facet_what:
|
|
Sun
facet_what
Sun
facet_what
|
|
facet_what:
|
|
Earth
facet_what
Earth
facet_what
|
|
facet_what:
|
|
Polar
facet_what
Polar
facet_what
|
|
facet_what:
|
|
Mars
facet_what
Mars
facet_what
|
|
facet_what:
|
|
Surveyor
facet_what
Surveyor
facet_what
|
|
facet_what:
|
|
Mars Global Surveyor Orbiter (MGS)
facet_what
Mars Global Surveyor Orbiter (MGS)
facet_what
|
|
facet_what:
|
|
Mars Orbiter Camera (MOC)
facet_what
Mars Orbiter Camera (MOC)
facet_what
|
|
facet_where:
|
|
Mars
facet_where
Mars
facet_where
|
|
facet_where:
|
|
Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
|
|
facet_when:
|
|
December 16, 2000
facet_when
December 16, 2000
facet_when
|
|
facet_when_year:
|
|
2000
facet_when_year
2000
facet_when_year
|
|
Image #:
|
|
PIA02898
|
|
UID:
|
|
SPD-PHOTJ-PIA02898
UID
SPD-PHOTJ-PIA02898
UID
|
|
orignial url:
|
orignial_url
orignial url
|
