
2. Riverbeds and Lakebeds Discovered on Saturn’s Titan. Methane rain, evaporating lakes, flowing rivers, and water ice-volcanoes are all likely to exist on Titan.

10. Laniakea (Hawaiian for ‘immense heaven’): Our Home Supercluster of Galaxies. Laniakea, spanning 500 million light years and containing about 100,000 times the mass of our Milky Way, is outlined in orange in this computer-generated visualisation. Each white dot is a galaxy. The blue dot signifies our location. White lines indicate motion towards the supercluster centre.
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Image sources and information: 1./2./3./4./5./6./7./8./9./10.