RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ESA/Hubble / NASA / L. Calcada " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
A handout released on February 20, 2019 shows an artist's impression of the outermost planet of the Solar System, Neptune, and its small moon Hippocamp. - Hippocamp was discovered in images taken with the NASA/ESA Hubble Space Telescope. Whilst the images taken with Hubble allowed astronomers to discover the moon and also to measure its diameter, about 34 kilometres, these images do not allow us to see surface structures. (Photo by L. CALCADA / various sources / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ESA/Hubble / NASA / L. Calcada " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS