Solar System Missions by NASA

Asteroids
Asteroid Redirect Initiative
Dawn
Near Earth Asteroid Rendezvous (NEAR)
Osiris-REX

Comets
Deep Impact
EPOXI
Rosetta
Stardust-NExT

Jupiter
Europa Mission
Galileo
Hubble
Juno
Pioneer
Voyager

Mars
Hubble
InSight
Mars Exploration Rover
Mars Global Surveyor
Mars Odyssey
Mars Pathfinder
Mars Reconnaissance Orbiter
Mars Science Laboratory, Curiosity
MAVEN
Phoenix
Viking

Mercury
MESSENGER

Moon
Apollo
Clementine
GRAIL
LADEE
LCROSS
LRO (Lunar Reconnaissance Orbiter)
Mini-RF
Moon Mineralogy Mapper
Ranger
Surveyor

Neptune
Hubble
Voyager

Planets
Hubble
James Webb Space Telescope
Kepler
Roentgen Satellite (ROSAT)
SWIFT
WISE

Pluto
Hubble
New Horizons

Saturn
Cassini
Hubble
Pioneer
Voyager

Sun and its Influence on Earth
Explorer
FAST
Geotail
Hinode (Solar-b)
Ionospheric Connection Explorer (ICON)
IMAGE
IRIS: Interface Region Imaging Spectrograph
Magnetospheric MultiScale (MMS) 
Polar
RHESSI
SDO
SOHO
Solar Anomalous and Magnetospherice Particle Explorer (SAMPEX)
Solar Orbiter Collaboration
Solar Probe Plus
Sounding Rockets
STEREO
THEMIS
TIMED
TRACE
Ulysses
Van Allen Probes (Radiation Belt Storm Probes)
WIND

Uranus
Hubble
Voyager

Venus
Magellan
Pioneer