August 16, 2022
Scientists discover how to build a spacecraft that crosses the solar system in record time

Scientists discover how to build a spacecraft that crosses the solar system in record time

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Scientists claim to have discovered the basic foundations for building a spacecraft that would reach another solar system during our lifetime.

Breakthrough Starshot researchers have discovered a way to build a spacecraft capable of traveling in Five the speed of light To get to Alpha Centauri in only 20 years.

The discovery, if proven, allows humanity to do so Explore a star in a reasonable time instead of The use of thousands of years that would be required with current chemical actuators.

If non-nuclear propulsion spacecraft are used, a trip To a planet that revolves around it The next centaur, on Alpha Centauri, would likely require thousands of years. For example, Voyager 1, which is now traveling at 17,043 km/s relative to the Sun, might reach The next centaur At 73,775 years.

To achieve this, the scientists’ goal is to travel at one-fifth the speed of light using a laser serieslocated at a ground station, to power a microscopically thick solar sail only three meters in diameter.

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like a spaceship, This sail would pull the sensors The microscopic size of the Alpha Centauri system, the closest star system to Earth, lies “only” 4.37 light-years away.

At the speed of one-fifth of light, the Starshot spacecraft will reach its destination in about 20 years. Once there, its hypothetical signal will reach our planet in less than four and a half years.

The project, which has former NASA Ames Research Center director Pete Worden among its ranks, has published studies that have found a solution. Two basic problems technology to be applied.

The first study points this way Solar candles should really have. Contrary to the ideas we had until recently, the sails will not be flat, quite the contrary.
They should be blown out like candles. sailboats to avoid which they break, with a curve as deep as their width. Only then, the study says, will it be able to withstand the excessive acceleration to which it will be subjected.

According to other study authors, Matthew Campbell of the University of Pennsylvania, “laser photons will fill a sail like air fills a beach ball.”

candle idea [solar] Lightweight has been around for a while, but we just figured out how to ensure this project survives,” says another scientist who was involved in the study.

The Monday The great achievement of the project is Heat dissipation beam Laser beams that drive the sail to speed up the ship.

The sail materials, which will be made of aluminum oxide sheets and molybdenum disulfide, will not withstand the energy buildup caused by the laser alone. If the candles suck even one A small portion of the incident laser lightIts temperature will rise to very high temperatures.

Therefore, scientists have suggested ways to “Maximize your ability to radiate heatIt is the only method of heat transfer available in space. “The solution lies in nanotechnology.

Only by increasing the sail’s effective surface area using a nanoscopic fabric pattern would it be possible to effectively cool the sail, allowing it to travel relatively quickly without being torn to shreds.