Bruce Murray Space Image Library
Arecibo's bright pixels fall in permanently shadowed craters
![Arecibo's bright pixels fall in permanently shadowed craters](https://planetary.s3.amazonaws.com/web/assets/pictures/_1200x907_crop_center-center_82_line/mercury_npole_messenger_arecibo_overlay.jpg 1200w, https://planetary.s3.amazonaws.com/web/assets/pictures/_768x580_crop_center-center_60_line/mercury_npole_messenger_arecibo_overlay.jpg 768w, https://planetary.s3.amazonaws.com/web/assets/pictures/_576x435_crop_center-center_60_line/mercury_npole_messenger_arecibo_overlay.jpg 576w)
This image is shown in a polar stereographic projection with every 5° of latitude and 30° of longitude indicated and with 0° longitude at the bottom. On Mercury, 5° of latitude is approximately 213 km.