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Earth Rotating from Galileo

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Uploaded on Oct 9, 2008

Time lapse video from still images taken by the Galileo spacecraft on its way to Jupiter in late 1990s.

http://antwrp.gsfc.nasa.gov/apod/ap07...

Explanation: When passing Earth on your way to Jupiter, what should you look for? That question arose for the robotic Galileo spacecraft that soundlessly coasted past the Solar System's most photographed orb almost two decades ago. The Galileo spacecraft, although originally launched from Earth, coasted past its home world twice in an effort to gain speed and shorten the duration of its trip to Jupiter. During Galileo's first Earth flyby in late 1990, it made a majestically silent home movie of our big blue marble rotating by taking images almost every minute during a 25-hour period. The above picture is one frame from this movie -- clicking on this frame will put it in motion (in many browsers). Visible on Earth are vast blue oceans, swirling white clouds, large golden continents, and even one continent frozen into a white sheet of water-ice. As Galileo passed, it saw a globe that not only rotated but began to recede into the distance. Galileo went on to a historic mission uncovering many secrets and mysteries of Jupiter over the next 14 years, before performing a final spectacular dive into the Jovian atmosphere.

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http://www.nasaimages.org/luna/servle...

Title:
Earth Rotation from Galileo Imagery: 600 x Real-Time
Instrument:
Galileo/Solid-State Imaging Camera
Description:
An animation of the Earths rotation from Galileo imagery at 600 times real-time. The timer indicates hours and minutes of elapsed time. The Earths rotation is apparent, but cloud motion is not perceptible. Duration: 34.0 seconds
Abstract:
This animation is one in a series created to show an accurate representation of the Earth's rotation at different temporal resolutions. The animation is created from images taken by the Galileo spacecraft during a close pass of the Earth on December 11-12, 1990. The animations range from real-time, in which no rotation can be perceived, to 3600 times real-time, in which both the Earth's rotation and cloud motion can bee seen. The series also includes an animation in which the Earth's rotation has been 'halted' so that cloud motion is easier to see and an animation showing the specific amount of rotation that takes place in three minutes.

CREDIT: NASA/Goddard Space Flight Center Scientific Visualization Studio

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