Astronomers at the University of Zurich believe that Mars; two present satellites, Phobos and Deimos, are the product of an impact early in Mars' history. By tracing their orbits back in time, they estimate that they originated from a single point — Stock photos

"Astronomers at the University of Zurich believe that Mars; two present satellites, Phobos and Deimos, are the product of an impact early in Mars' history. By tracing their orbits back in time, they estimate that they originated from a single point" is an authentic stock image by ScienceRF. It’s available in the following resolutions: 1600 x 1072px, 2600 x 1742px, 5107 x 3422px. The minimum price for an image is 49$. Image in the highest quality is 5107 x 3422px, 300 dpi, and costs 449$.