An explanation of the images PIA17172 and PIA17171, the day the Earth smiled in 4K UHD.

The view was acquired on Sept. 14, 2017 at 19:59 UTC (spacecraft event time). The view was taken in visible light using the Cassini spacecraft wide-angle camera at a distance of 394,000 miles (634,000 ...

These are the closest-ever images of Saturn. They were taken by NASA's Cassini spacecraft just days before it crashed into Saturn. The results are spectacular. Shortly after Cassini took its final ...