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How to Sail on Sunlight

For thousands of years,humans have used the power of wind to sail across our planet and discover new lands thatwere seemingly out of reach. What if I told you thatthere's a 400 year old idea that applies the concept of sails to space that could make the edge ofour solar system accessible in under 10 years of travel time? In the hands of the Sith Lord Count Dooku, a version of this concept was used when he escaped fromGeonosis without a trace.

How could we use sunlight to assail our travel woes in real life? (upbeat electronic music) The sun is a source ofplentiful free energy, and ever since 1608,harnessing it was an idea that BFF's Johannes Keplerand Galileo Galilei shared, and it's since inspired tabletopRPG's like Star Traders, short stories, TV shows, movies, and actual solar sail missions. One example of solar sails in movies is Count Dooku's Punworcca116, or the Solar Sailer. It's somewhat of a misnomersince it's not being pushed by solar pressure, but absorbs energy, similar to a solar sail toprovide energy to the ship. For someone on the DarkSide, he sure knew how to leverage clean energy. Maybe he wasn't so dark after all. (lightning zaps)Okay, maybe he was! As space Biggie once said,"Mo-photons, mo-mentum." Solar radiation allowsus to harness the sun like sailboats use wind. Each photon that hits yoursail is transferring momentum onto your sail, whichaccelerates your ship.

Based on the way the sail is angled, you can change directions, decrease, or increase a spacecraft's velocity. In the vacuum of space, youdon't have the pesky air that we have on Earthadding to atmospheric drag and slowing us down. There are several designs that solar sails use in pop culture,like Count Dooku's ship, and other concepts designed byspace agencies here on Earth. Each one providing an advantage depending on the maneuvers you need to do and how you plan on deploying the sail. The principle of sunlightpressure pushing things around in space has been harnessed and applied already inseveral satellite missions.

For example, Mariner 10 ran out of gas in their attitude control system, but flight controllers used this principle to allow the sun to spinstabilize the spacecraft by orienting the reflective solar panels to generate the spin. Unlike traditionalrockets or ion propulsion, solar sailing is a veryunique form of propulsion that was once thought to be impossible and still proves to be difficult even though it has beendemonstrated in the past. Scientists at NASA'sMarshall Space Flight Center are researching ultralightweight materials to use as sails, which canadvance the use of this method in the future. There are many factors that contribute to the forces that canpropel a solar sail. The largest factor'selectromagnetic radiation emitted by the sun. Other factors that generate a force are solar wind, which is100 times less effective as electromagnetic radiation, albedo, which is the reflection and scattering of solar radiation off the Earth, and Earth's infrared emissions. Calculating the amount offlux, or density of pressure that the electromagneticradiation from the sun contributes per square meter at ourdistance from the sun, the linear momentum thatthis flux generates is, this is a million timesless than the pressure exerted from a dollarbill sitting on the table.

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phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix info solutions phelix 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Well, if our ears were out there in space listening for pressure exertedby electromagnetic waves, not hearing the sun would bethe least of your concerns. It's not just about the pressure, but the total force exertedover the full area of the sail. The larger the sail, thelarger the total force. The acceleration thatyou get from a solar sail can be calculated using this equation where nu is the sail efficiency considering that the opticalproperties of the sail is not perfect. Just like a fun house mirrorversus a regular mirror, you want it to be as closeto perfect as possible to get the most efficient use out of it. Based on this equation, we can make all kinds of fun calculations. Let's say you wanna knowhow big of a solar sail you would need totransport humans to space.

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