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REASON

A 3D model of the Radar for Europa Assessment and Sounding: Ocean to Near-surface (REASON), a radar & gravity instrument on Europa Clipper. Learn more about REASON

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This view of Jupiter's moon Europa features several regional-resolution mosaics overlaid on a lower resolution global view for context.
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high-resolution color images of terrain superimposed over a lower-resolution view of about half of Europa's surface
Repeated Flybys Yield a Pole-to-Pole View of Europa
Europa Clipper’s surface dust analyzer instrument was delivered to JPL in September 2022. 
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A large group of engineers in full white body coveralls stand surrounding Europa Clipper’s surface dust analyzer. All the engineers are giving a “thumbs up” hand gesture to indicate that the instrument was successfully delivered. Nine engineers stand to the left of a silver workbench, on which the instrument rests, and six stand to the right of the workbench. The instrument is gold colored and about the size of a drum, resting on its side. The instrument is resting upon a silver workbench in the cleanroom.
Europa Clipper's Dust Analyzer Delivered to JPL
This video shows a test deployment of Europa Clipper’s high frequency (HF) radar antenna.
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video of test deployment of Europa Clipper’s high frequency (HF) radar antenna
Europa Clipper REASON HF Radar Antenna Deployment
Members of the Europa Clipper team work on the spacecraft’s heat redistribution system at Jet Propulsion Laboratory in 2019.
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Members of the Europa Clipper team work on the spacecraft’s heat redistribution system at Jet Propulsion Laboratory in 2019.
Europa Clipper's Thermal Tubing
A view of the outward-facing side of the Europa Clipper vault plate.
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An image of the Europa Clipper vault plate, highlighted from the upper left corner casting shadows that emphasize engraved waveforms emanating from a central point symbolizing the word 'water' in multiple languages. The waveforms present as audio frequency waves. The vault plate is metal silver and the engravings are black, set against a black background.
Europa Clipper Vault Plate - Outward-Facing Side
Europa Clipper's developmental test model sits on a flatbed truck at NASA's Jet Propulsion laboratory on its way to structural testing.
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A shiny metal cylinder 5 feet (1.5 meters) wide and 16 feet (5 meters) tall stands erect on the flatbed of a truck.
Europa Clipper's Developmental Test Model
An engineer inspects the test setup of the optical telescope assembly for the Europa Imaging System narrow angle camera. 
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An engineer inspects the test setup of the optical telescope assembly for the Europa Imaging System narrow angle camera.
Europa Imaging System Optical Telescope Assembly
Engineers integrate the avionics vault mass simulator for the Europa Clipper avionics module to the top of the propulsion module.
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Engineers integrate the avionics vault mass simulator for the Europa Clipper avionics module to the top of the propulsion module.
Avionics Mass Simulator
Europa's surface as seen by the Galileo spacecraft during its 17th orbit around Jupiter.
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criss-crossing ridges and grooves
Europa's Rhadamanthys Linea
A close-up view of the top of the inward-facing side of the Europa Clipper vault plate. It's engraved with the Drake Equation, and the Jovian system with a bottle replacing Jupiter. 
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This is a close-up view of the top of the Europa Clipper's triangular-shaped silver vault plate. It has a rounded top and a flat bottom. This view shows the Drake Equation, and a drawing of the Jovian system with Jupiter replaced with a bottle.
Europa Clipper Vault Plate - Inward Facing Top
A 3D model of the Plasma Instrument for Magnetic Sounding (PIMS), a plasma and magnetic field instrument on Europa Clipper. 
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3d model of PIMS instrument
PIMS
Engineers and technicians lift the tall core of NASA’s Europa Clipper spacecraft during a maneuver to position it in the High Bay 1 clean room of the Spacecraft Assembly Facility at the agency’s Je...
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In the center of the image, the main body of the Europa Clipper spacecraft hangs from a yellow crane in a large, multistoried cleanroom with white walls and a white ceiling. Six engineers in full-body coveralls and masks stand around the base of the main body as it hangs from the crane, with some working on the main body. In the distance, a viewing gallery is visible with four people watching the activities taking place.
The Lift: NASA's Europa Clipper Moves into Position
In this activity, students will build a spectrometer using basic materials to observe the light.
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A light bulb is visible on the left and a rainbow of colors is visible on the right.
Classroom Activity: Using Light to Study Planets
An engineer handles the SUrface Dust Analyzer (SUDA) in the clean room at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder. Dry nitrogen gas is continua...
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An image showing an engineer handles the SUrface Dust Analyzer (SUDA) in the clean room at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder. Dry nitrogen gas is continually pumped through the instrument during assembly and testing to ensure it remains clean and free of contaminants.
Dust Analyzer in the Clean Room
Engineers prepare Europa Clipper's thermal imager for a series of tests in a clean room at NASA's Jet Propulsion Laboratory following the instrument's delivery.
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Multiple engineers in white coveralls preparing the thermal imager instrument, located on a table in a clean room, for functional testing. One engineer has their hands on the instrument.
Thermal Imager Delivered to JPL
This is a composite of two images of Jupiter's icy moon Europa obtained from a range of 2,119 miles (3,410 kilometers) by the Galileo spacecraft during its fourth orbit around Jupiter and its first...
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rough terrain on an icy surface
Structurally Complex Surface of Europa
Engineers following initial inspections of Europa Clipper's ultraviolet spectrograph in a cleanroom at NASA's Jet Propulsion Laboratory in Southern California.
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Engineers giving thumbs ups following initial inspections of Europa Clipper's ultraviolet spectrograph in a cleanroom at NASA's Jet Propulsion Laboratory in Southern California.
Ultraviolet Spectrograph Delivered to JPL
An engineer ground tests Europa Clipper’s dust analyzer.
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The SUDA sensor head rests upon a table in a clean room. The sensor head is gold in color, shaped slightly like a drum on its side with a door facing the viewer that is closed. An engineer in white coveralls, a mask, and light blue gloves is on the right side of the image and is seen peering over the instrument. The engineer is holding a handheld device attached a blue wire, which itself is attached to the sensor head, and they perform a test. Is a purple light is shown on the table and on the front of the engineer.
Electrical Ground Testing Europa Clipper's Dust Analyzer
The SUDA instrument undergoes dust acceleration testing. 
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Video showing engineers handling the SUDA instrument as it is loaded into a vacuum chamber for dust testing and then moved back to a clean room.
SUDA Dust Test Timelapse
This high resolution image shows the ice-rich crust of Europa, one of the moons of Jupiter.
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black and white view of rough terrain on an icy surface
Europa Ice Rafts
The bake-out fixture is modified in preparation for the transfer and installation of the harness onto the propulsion module structure. The harness is the cabling that connects all of the electronic...
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people wearing clean room attire work on the spacecraft's electrical system
Europa Clipper Propulsion Module
This animation showing a flyover of the region named Conamara on Europa was created using stereo imaging data obtained by NASA's Galileo spacecraft.
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A 3D black-and-white flyover of Europa's surface.
Conamara Chaos Flyover
Where's a great place to look for life in our solar system beyond Earth? Jupiter's moon, Europa, with its salty, global ocean, might be a good place to start.
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An illustrated and audio description of possible life on Europa.
Europa - Cool Destination For Life?
Europa Clipper’s mass spectrometer is examined following delivery to JPL in December 2022.
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Europa Clipper’s mass spectrometer takes up the middle of this image. The instrument consists of a long cylinder, several feet tall and a couple of inches in diameter. It takes the shape of an automobile spark plug, with a series of ridges visible at the top. Copper plating and wires extend from the instrument in multiple areas. The instrument is installed on a supportive structure. Engineers are visible in the background working.
Europa Clipper's Mass Spectrometer Delivered to JPL
These images show a comparison of the surfaces of the three icy Galilean satellites, Europa, Ganymede, and Callisto.
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three black and white views of the rugged, icy surfaces of three moons
Europa, Ganymede, and Callisto: Surface Comparison at High Spatial Resolution