title: How save a sattelite image in earth engine?
body: <p>I'm searching how to export an image from earth engine to the drive.
  But I would like my image to be a sattelite one.
  How can I do it ? Is it possible?
  Thank you in advance.</p>
  
  <p>I have already read the doc of earth engine. I find this programm : </p>
  
  <pre><code>var landsat = ee.Image('LANDSAT/LC08/C01/T1_TOA/LC08_123032_20140515') .select(['B4', 'B3', 'B2']);
  
   // Create a geometry representing an export region. 
  var geometry = ee.Geometry.Rectangle([116.2621, 39.9, 116.3849, 40.0]);
  
   // Export the image, specifying scale and region.
   Export.image.toDrive({ image: landsat, description: 'test', scale: 30, region: geometry, format:"png" });
  </code></pre>
  
  <p>But it give me a corrupted file</p>