Aste ero oid Be elt Asteroid Belt Ceres Earth-Sun L 2 point Dawn Earth-Orbiting Craft ASTROPHYSICS AGILE Astrosat Chandra Fermi Hubble Integral ISS Lomonosov NuSTAR Pamela RadioAstron (Spektr-R) Swift Tiangong-2 Station Wukong XMM-Newton Gaia Earth-Sun L1 point Mars IN ORBIT Mars Odyssey Mars Reconnaissance Orbiter MAVEN MOM Mars Express Trace Gas Orbiter ACE DSCOVR LISA Pathfinder SOHO WIND PLANETARY/SOLAR SYSTEM IBEX Hisaki NEOSSat SOLAR Hinode IRIS PROBA-2 RHESSI SDO SPACE WEATHER GOES STELLAR BRITE MOST GRAVITY Microscope ON SURFACE Opportunity Curiosity Uranus Neptune Jupiter Juno Saturn Cassini per Belt Ku Kuiper uip Be elt Pluto New Horizons Voyager 2 2014 MU69 Not to scale Voyager 1 s k y a n d t e l e s c o p e .c o m * JANUARY 2017 23http://www.skyandtelescope.com