00:00A NASA mission is testing revolutionary technology to allow robotic spacecraft to sail on sunlight.
00:08The advanced composite solar sail system introduces a new way to explore the cosmos.
00:15Much like a sailboat is propelled by wind, a solar sail spacecraft is pushed by light from the sun.
00:23Sunlight is composed of particles called photons.
00:25As these particles bounce off the reflective sail, the spacecraft accelerates.
00:32This eliminates the need for rocket propellant and makes it possible for spacecraft to travel indefinitely.
00:40The sail is stored inside a spacecraft about the size of the microwave oven.
00:46Lightweight carbon fiber booms unroll from the spacecraft to form rigid tubes
00:52that support the ultra-thin reflective polymer sail.
00:56When fully deployed, the sail forms a square that is 33 by 33 feet or about half the size of
01:04a tennis court.
01:06Altitude and position are changed by angling the sail toward or away from the sun.
01:11Results from the mission will guide the design of next generation solar sail spacecraft
01:18to explore and conduct science across the solar system.
01:23� is now its time to sail to столько quickly for윈 shaquit 달� star piermedi fundo
01:30in terms of the subway path if you can visit Messiah.
01:32If so, catch up at the istagoon.
01:32step through to beş to this mission? The
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