Saturday, June 5, 2010

JAXA Akatsuki: Pale Blue Island Earth


Two Japanese spacecraft, one headed to Venus and another limping home from an asteroid, have beamed home snapshots of Earth that reveal our planet in different hues amid a sea of stars.

The latest photos of Earth come from Japan's brand new Venus Climate Orbiter Akatsuki and the Hayabusa asteroid probe.

Akatsuki launched May 20 alongside a novel solar sail vehicle and other smaller payloads to begin a six-month trek toward the second planet from the sun.
Hayabusa is returning to Earth from the asteroid Itokawa, which it visited in late 2005 and is due to land in Australia in June.

The Technicolor Earth
The photos of Earth from space by Akatsuki reveal a stunning crescent as the planet appeared to the probe's ultraviolet and infrared cameras.

In ultraviolet, the Earth appears as a dazzling blue sliver, while the same crescent has a vibrant orange hue in infrared. Akatsuki (which means "Dawn" in Japanese) was flying about 155,342 miles (250,000 km) from Earth when it photographed the planet.

Akatsuki also used its long-wave infrared camera to take a snapshot of the entire Earth, though the planet may be unrecognizable to the uninitiated. Earth's trademark blue oceans and white clouds are rendered only in black and white.

Japan's Akatsuki mission is expected to observe Venus in unprecedented detail to study its ever-present clouds and hidden surface. The spacecraft is expected to reach Venus in December and spent two years studying the planet.

The IKAROS solar sail vehicle also launched with the Akatsuki probe and will make a pit stop at Venus before heading off to the far side of the sun. Both spacecraft are doing well, JAXA officials said.

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