Extended Data Fig. 1: Comparison of pre-landing and post-landing images.
From: The Philae lander reveals low-strength primitive ice inside cometary boulders
a, b, Comparison of the location of the skull-top ridge (yellow rectangle) as it looked in a pre-landing OSIRIS image (a; 22 October 2014) and in a post-landing image (b; 14 May 2016). The yellow dashed lines outline the skull-top boulders (see Supplementary Video 1 for a detailed comparison), while context terrain similarities between images are shown in blue dashed lines. Although the spacecraft distance is the same (about 8 km), the solar illumination and the Rosetta viewing geometry differ between the images. An arrow points at the Philae lander location in b.
