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The Planetary Society’s LightSail 2 Solar Satellite

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The Planetary Society have launched a solar satellite which has been named the Lightsail 2. The solar sailing Cubesat device will be in orbit for the rest of August. Let’s learn more about the solar sailing technology and what the Planetary Society hope to achieve with the launch of this fascinating new piece of technology! 

The Planetary Society’s LightSail 2 Solar Satellite

The Planetary Society’s LightSail 2 Solar Satellite (source: planetary.org)

The concept of ‘solar sailing’ means that an object will be moved by photons escaping the sun’s gravitational pull. According to Popular Mechanics, It’s the second ever solar sailing object to fly – with the solar satellite following IKAROS (Interplanetary Kite-craft Accelerated by Radiation Of the Sun) from Japan, which launched in 2010. IKAROS certainly has the cooler name, but the LightSail 2 has some superior technology – an aluminzed (a coating of aluminum alloy) Mylar sail and far better uptime.

“For The Planetary Society, this moment has been decades in the making,” said Planetary Society CEO Bill Nye. “Carl Sagan talked about solar sailing when I was in his class in 1977. But the idea goes back at least to 1607, when Johannes Kepler noticed that comet tails must be created by energy from the sun. The LightSail 2 mission is a game-changer for spaceflight and advancing space exploration.”

“We’re thrilled to announce mission success for LightSail 2,” LightSail program manager and Planetary Society chief scientist Bruce Betts said. “Our criteria was to demonstrate controlled solar sailing in a CubeSat by changing the spacecraft’s orbit using only the light pressure of the sun, something that’s never been done before. I’m enormously proud of this team. It’s been a long road and we did it.”

If you’re interest in reading more, the Planetary Society have created a site named Mission Control where you’re able to track the LightSail 2 in space. To visit Mission Control please click here. 

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Solar in Space – China’s Plans Revealed.

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Chinese media are reporting that solar in space may not be as far off as we think – they’re revealed plans to build a power station orbiting the earth. Let’s take a look at the plans and see what other countries are also working on renewable energy in the solar system. 

Solar in Space – How does it work?

Solar in Space - Mars Rover (source: nasa.gov)
Solar in Space – Mars Rover (source: nasa.gov)

Chinese Media have made a statement about the solar space race – their idea is that a station could orbit the earth at 36,000 kilometres – enough to get the sun’s energy but not experience any atmosphere interference. Seasonal and night-time loss of sunlight will also be totally negated, so the station would be able to generate significantly more power than those on earth which are subject to the sun’s whims.

Chinese journal Science and Technology Daily has reported that the city of Chongqing is the host of construction of an early experimental space solar plant. 

Pang Zhihao, researcher from the China Academy of Space Technology Corporation, said a space solar power station held the promise of providing “an inexhaustible source of clean energy for humans”, according to the Sydney Morning Herald. The space solar station would be able to supply energy at 6x the power of solar farms on earth – reliably supplying energy “99%” of the time. 

The next plan for China is to build and launch a number of small/medium sized solar power stations which will be launched into the stratosphere between 2021 – 2025. 

According to the SMH Japanese, Indian and European scientists are also working on the best way to generate solar power in space. What impact could this unlimited power have on things like the Mars Rover which was ‘pronounced dead‘ over the last week? According to the researches, the energy would be converted to electricity and send to the earth via a microwave or laser beam – so they’ll need to work on ensuring this won’t have any bad effects on atmosphere or the earth in general before it goes ahead. 

 
 

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