This page allows you to retrieve photos from NASA.

By Guilhem Martin, January 2012.

Please note:

Source code to download NASA photos (highlighted thanks to http://tohtml.com/php/)
Preview:
<?php

$sYear       = "2009";
$sResolution = "250m";
$sType       = "terra";
$iFromDayNumber = 1;

set_time_limit(0);   

for($iDay=$iFromDayNumber;$iDay<366;$iDay++) {
  if($iDay>99) 
    $iDayNumber = $iDay;
  elseif($iDay>9)
    $iDayNumber = "0$iDay";
  else
    $iDayNumber = "00$iDay";
  $sFileName = "AERONET_Carpentras.$sYear$iDayNumber.$sType.$sResolution.jpg";
  $sImage = file_get_contents("http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=$sFileName");
  file_put_contents($sFileName,$sImage);
}

echo "OK.";