In the absence of Photoshop, NASA splicing photos like this

The picture you see now is a mosaic of a photograph taken by Voyager 1th on Ganymede. The 70-80 years are a difficult time for space exploration. There was no program on the detector to analyze and digitally splice pictures, so the process needed to be done purely by hand. Although it seems to be a kindergarten student can complete the work, but in fact, these stitching is to reflect the important value of space. In the case of Ganymede, because every photo is a surprise to scientists, editing is essential. Put them on the table, one by one screening, 1.1 points of stitching out the first Jupiter puzzle, found that Jupiter is not previously imagined as a frozen wilderness. It is smooth in appearance, in other words, no other meteorite collision characteristics. In fact, the volcanic activity on the satellite is so intense that it blurs the crater. [Via Gizmodo]