Seasonal Changes In Mars' North Polar Ice Cap

These images, which seem to have been taken while Hubble Space Telescope (HST) was looking directly down on the Martian North Pole, were actually created by assembling mosaics of three sets of images taken by HST in October, 1996 and in January and March, 1997 and projecting them to appear as they would if seen from above the pole. This first mosaic is a view which could not actually be seen in nature because at this season a portion of the pole would have actually been in shadow; the last view, taken near the summer solstice, would correspond to the Midnight Sun on Earth with the pole fully illuminated all day. The resulting polar maps begin at 50 degrees N latitude and are oriented with 0 degrees longitude at the 12 o'clock position. This series of pictures captures the seasonal retreat of Mars' north polar cap.

Credit:

Phil James (Univ. Toledo), Todd Clancy (Space Science Inst., Boulder, CO), Steve Lee (Univ. Colorado), and NASA/ESA

About the Image

NASA press release
NASA caption
Id:opo9715b
Type:Collage
Release date:20 May 1997, 19:00
Size:3000 x 2250 px

About the Object

Name:Mars
Type:• Solar System : Planet
• X - Solar System Images/Videos

Colours & filters

BandWavelengthTelescope
Optical
B
410 nm Hubble Space Telescope
WFPC2
Optical
V
502 nm Hubble Space Telescope
WFPC2
Optical
R
673 nm Hubble Space Telescope
WFPC2

Image Formats

Large JPEG
446.0 KB
Screensize JPEG
123.3 KB

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