Stellar navigation is the development bottleneck that humanity needs to face in the future. If we can achieve stellar navigation, we can achieve colonization beyond the solar system. However, stellar navigation requires advanced power systems. Philip Rubin, a professor of physics at the University of California, Santa Barbara, envisioned a directed energy propulsion system that uses lasers to drive spacecraft to the nearest Alpha Centauri from the solar system. . Directional energy can be driven very fast, and it can be reached within 20 years.

Schematic diagram of laser directed energy propulsion technology, high-function laser can accelerate interplanetary spacecraft in a short time. The idea of ​​using laser as a spacecraft has been funded by NASA, which is a potential science and technology that has turned from science fiction to reality. NASA recently identified 15 advanced and innovative concept technologies designed to make science fiction a reality. Laser orientation energy drives are just one example. Philip Rubin believes that the major challenge facing mankind is to develop advanced power systems to promote our detectors. This is an important step in interplanetary navigation.

Philip Rubin, professor of physics at the University of California, Santa Barbara, conceives a solution that can achieve a maximum speed of 0.2 times the speed of light: using a laser to drive a spacecraft, it takes only 20 years to reach the nearest Centauri Alpha Star:

The particle propellant currently used. Of course, the directional energy propulsion system envisioned by Philip Rubin requires a very low starting quality, which means that the technology is suitable for use in micro-spacecrafts, so that laser directional energy can play a role. The reason why the University of California has conceived the use of laser directed energy for spacecraft is that the main reason is that going to an adjacent star system may not require a huge spacecraft. The micro-detector is more suitable for deep space missions and can reach Alpha Centauri within 20 years. .

The speed of laser photon drive technology far exceeds the currently available form of power, and can even approach the relativistic speed. The laser photon drive can also be used for Mars travel and we can reach the rocket in a short time. At the Planet Defense Conference held in Italy last spring, the University of California, Santa Barbara, demonstrated the technology of directed destruction of asteroids, which can be applied to incoming asteroids of all diameters.

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