Preparing for Rover Pivot Test

President Obama Phones Mars Rover Team

Our Solar System, from the Outside

Proposed Mission for Studying Deep Interior of Mars (Artist Concept)

Artist's Concept of Mars Odyssey Aerobraking

Deceleration of Mars Science Laboratory in Martian Atmosphere, Artist's Concept

Preparing Juno for Acoustical Testing

Diviner Following Integration to the Lunar Reconnaissance Orbiter (LRO)

Mars Rover Curiosity in Artist's Concept, Tall

Lowering Juno's Radiation Vault

Mars Science Laboratory Aeroshell with Curiosity Inside

Example of a Spectrum from Curiosity's ChemCam Instrument

Off-Earth Driving Champs (in Miles)

Juno Taking Shape

Deep Space 1's Ion Engine

Out-of-this-World Records

Schematic of Laser-Induced Breakdown Spectroscopy

Preparation for Testing of Mars Landing Radar

Preparing for Solar and Thermal Testing of Curiosity Mars Rover

Artist's Concept of Gravity Recovery and Climate Experiment

Setting up Juno's Radiation Vault

Solar System Montage with Eight Planets

Airborne Testing for Mars Landing Radar by Dryden F/A-18

MAVEN at Mars, Artist's Concept

Inspecting a Canister and Sample Collector

Wrapping NuSTAR in Its Rocket Nose Cone

LEGO Figurines Aboard Juno

NASA Tests Future Mars Landing Technology

Juno's Atlas Receives its Centaur

Dawn Orbiting Vesta

Biggest-Ever Heat Shield Prepared for Mars Spacecraft

Phoenix Soaks up the Sun

Camera Test on Curiosity During Flight to Mars

Next Mars Rover Starts Rolling

NASA's WISE Spacecraft Situated on Work Stand

Size of Kepler Planet Candidates

Juno Fires its Main Engine

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

Light Travels Through AIRS Optics

Gold Foil on Aquarius Reflector

Critical Step in Next Mars Rover Landing

Curiosity's Hazard Cameras Ready for Action

Testing Precision of Movement of Curiosity's Robotic Arm

Black Hole Erupts

Voyager 1 Encounters Stagnation Region

Mars Exploration Rover Makes Progress

Integrating NuSTAR

Spitzer, Planck and Kepler Extended by NASA

Juno at the Vertical Integration Facility

'Y Dwarf' Chillin' in Space (Artist's Concept)

Artist's Concept of Gravity Recovery and Climate Experiment