The Hubble Space Telescope’s Wide Field Camera caught Io, Callisto and Europa and their shadows passing across the face of Jupiter on Jan. 23rd, 2015, which happens only once or twice per decade. Best Telescopes for Beginners: Reviews and Buying Guide: [ Ссылка ]

Credit: ESA/NASA/G. Bacon, L. Frattare, Z. Levay, and F. Summers (STScI/AURA)/mash mix: Space.com

свернуть