LightSail 2 Sends Images Back to Earth, Prepares for Sail Deployment
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The first pictures of Earth sent from LightSail 2, the Carl Sagan-inspired solar sail, reached mission control yesterday.
The Planetary Society, who sent LightSail 2 into orbit with help from SpaceX, made the announcement in a statement.
The same update gave news on the health status of the spacecraft and the upcoming deployment date for the solar sail.
RELATED: FIRST CONTACT MADE WITH LIGHTSAIL 2 SPACECRAFT SINCE ITS DEPLOYMENT
Images beamed down to Earth
Last Friday, the Planetary Society's mission control, at Cal Poly San Luis Obispo in California, successfully deployed the LightSail 2 spacecraft's dual-sided solar panels.
Moments later, the spacecraft sent pictures of Earth, taken by a camera mounted on the solar panels, back down to mission control.
The space pictures, taken as the spacecraft was floating into an orbital sunset, show a crescent-shaped Earth silhouette.
The images, shown above and below, were shared in the Planetary Society's statement.
Lens flare artifacts in the shots were caused by sunlight scattering around the camera optics. The spacecraft’s dual fisheye cameras have fields of view of about 180 degrees. This causes the arcs in the corners of the images as well as a little distortion.
Sail deployment approaching
The Planetary Society statement originally said that the deployment of LightSail 2's solar sails could happen as early as today. However, an amendment was made after it was posted online:
"Update Sunday, 7 July: Sail deployment is now expected no earlier than Tuesday, 8 July."
The Planetary Society announced that most of the tests, necessary to ensure sail deployment is possible, have already been completed.
However, a significant test on the spacecraft's attitude control system is yet to take place. This will make sure that LightSail 2 will be able to use the system to orient the spacecraft while solar sailing — it utilizes Sun sensors, magnetometers, and ground-uploaded position data.
The successful deployment of the LightSail 2's solar sail will see the Planetary Society make famous science populariser Carl Sagan's dreams, from 40 years ago, come true.
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