Eyes on the Solar System

Artist's concept of GRAIL mission

See GRAIL's current position and explore the mission in detail with NASA's Eyes on the Solar System 3D interactive.

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Visit the Eyes on the Solar System homepage to learn more.

› Launch GRAIL module

GRAIL iPhone App

GRAIL add for iPhone app

NASA’s GRAIL app has specific information about the science and purpose of the mission, and features daily mission news updates, images of the spacecraft during assembly and testing, videos and a countdown timer to launch.

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Mission News

Artist's concept of NASA's twin GRAIL spacecraft

Flying Formation - Around the Moon at 3,600 MPH

The act of two or more aircraft flying together in a disciplined, synchronized manner is one of the cornerstones of military aviation, as well as ...

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Far side of the lunar surface with Earth in the background

NASA GRAIL Returns First Student-Selected Moon Images

One of two NASA spacecraft orbiting the moon has beamed back the first student-requested pictures of the lunar surface from its onboard camera.

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A precision formation-flying technique, the twin GRAIL spacecraft.

NASA's Twin GRAIL Spacecraft Begin Collecting Data

NASA's Gravity Recovery And Interior Laboratory (GRAIL) spacecraft orbiting the moon officially have begun their science collection phase.

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Far side of Earth's Moon

NASA Mission Returns First Video From Moon's Far Side

A camera aboard one of NASA's twin GRAIL lunar spacecraft returned its first unique view of the far side of the moon.

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GRAIL Artist's Rendition

Montana Students Pick Winning Names for Moon Craft

Twin NASA spacecraft that achieved orbit around the moon New Year's Eve and New Year's Day have new names, thanks to elementary students in Bozeman, ...

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Latest Images

NASA's GRAIL Spacecraft In Science Collection Phase

An artist's depiction of the twin spacecraft that comprise NASA's Gravity Recovery And Interior Laboratory (GRAIL) mission

An artist's depiction of the twin spacecraft that comprise NASA's Gravity Recovery And Interior Laboratory (GRAIL) mission. During the GRAIL mission's science phase, spacecraft (Ebb and Flow) ...

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GRAIL Spacecraft Over the Moon

Artist's concept of NASA's twin GRAIL spacecraft

An artist’s depiction of the twin spacecraft (Ebb and Flow) that comprise NASA’s Gravity Recovery And Interior Laboratory (GRAIL) mission.

NASA's Jet Propulsion Laboratory in Pasadena, ...

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MoonKAM Looks Homeward

Far side of the lunar surface, with Earth in the background

This image of the far side of the lunar surface, with Earth in the background, was taken by the MoonKAM system onboard the Ebb spacecraft as part of the first image set taken from lunar orbit from ...

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GRAIL Clock

    GRAIL mission elapse time:

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Mission Extras

  • Technicians lift one of two GRAIL spacecraft to a test stand

    Grail Image Gallery

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  • Launch pad

    Test Your Knowledge

    Find out if you've got the right stuff to plot the course for future space missions.

    › Take the Quiz
  • Rocket Science 101

    Rocket Science 101

    Assemble a Delta II, Delta IV, Atlas V or Pegasus rocket from main engine to payload fairing!

    › Build a Rocket

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