Bird's Eye View of Kepler-16 System (Artist Concept)

Mars Reconnaissance Orbiter over Nilosyrtis

Arm and Mast of NASA Mars Rover Curiosity

Illustrating MastCam Capabilities with a Terrestrial Scene

Artist's Concept of Mars Odyssey

Complementary X-Ray Vision

Moviemaker with Mars Rover 'Stunt Double'

Aquarius Reflector Attachment

Daytime Water Cycle on the Moon

Shooting Lasers

Watching Test Drives in California for Rover Mission to Mars

Uniting of NuSTAR Spacecraft and Rocket

Wheels Spinning

Kepler-22b -- Comfortably Circling within the Habitable Zone

Schematic of Sample Analysis at Mars (SAM) Instrument

Moving Juno to Environmental Testing

Lowering SAM Instrument into Curiosity Mars Rover

Riding Along with Juno

Mars Rover Curiosity's Arm Held High

Top of Mars Rover Curiosity's Remote Sensing Mast

Test Model of Mars Landing Radar

Off-Earth Driving Champs (in Miles)

Cruise Vehicles (Artist Concept)

Testing of Icy-Soil Sample Delivery in Simulated Martian Conditions (Animation)

Inspecting Juno's Radiation Vault

MAHLI Calibration Target in Ultraviolet Light

Readying Juno's Propulsion Module

Simulating a Submarine Hydrothermal Vent

Mars Rover Curiosity, Right Side View

Artist's Concept of Mars Odyssey Aerobraking

Phoenix Eases Down to Mars

Animated Optical Microscope Zoom in from Phoenix Launch to Martian Surface

GRAIL Twins are Covered

Relative Positions of Distant Spacecraft

A Look Inside WISE

Mars Science Laboratory Spacecraft During Cruise, Artist's Concept

Preparing for Solar and Thermal Testing of Curiosity Mars Rover

Diverse Science Payload on Mars Rover Curiosity

Installation of Curiosity's Wheels and Suspension

Diviner Undergoing Post Thermal Vacuum Range of Motion Testing

Detector for CheMin

Preparing for a Mars Radar Test

Wrapping NuSTAR in Its Rocket Nose Cone

Protecting Juno's Electronics from Radiation

Detail Observed from 10 Feet away with Curiosity's ChemCam

Radiation Levels on the Way to Mars

NASA's WISE Cryostat

NuSTAR Inches Toward its Rocket

A Robot or a Science Instrument?

NEOCam Sensor

Tilt-Table Testing for Curiosity's Robotic Arm