As any astronomer will tell you, we are incredibly lucky. Above our heads, indescribable wonders fill the night skies. Spiraling galaxies. Distant moons buried beneath a layer of ice. Twisting nebulae. The detritus of the Big Bang, spreading out to every corner of our universe.

In our solar system alone, there are worlds and places whose mere names evoke the romantic and the mystical. Who could read about the eerie ice spires of Callisto, the impossibly deep Valles Marineris on Mars, or the apocalyptic Herschel Crater on Mimas without feeling a chill run down their spines?

To celebrate this awe-inspiring diversity, the American magazine Astronomy in 1999 named its ‘7 Wonders of the Solar System’. Here is our definitive guide to these 7 marvels of the night sky – along with three others as mysterious and beguiling as any of the ‘official’ seven. See them here!