US scientists plan to build a space laser array to intercept invasive asteroids

US scientists plan to build a space laser array to intercept invasive asteroids

DE-STAR system operation principle diagram.

According to a team of scientists from the California Institute of Technology and the University of California, Santa Barbara, the DE-STAR system can not only monitor and destroy asteroids that threaten the Earth, but also evaluate the composition of asteroids and provide energy for interplanetary voyages.

According to comprehensive reports, after a dozen hours of rain hit by the meteorite shower on February 15 local time in several states of Siberia, Russia, a small asteroid with the size of a football field once again passed the earth. The occurrence of two astronomical "disasters" suddenly increased the sense of urgency for preventing the Earth from encountering "uninvited guest" attacks in outer space. Coincidentally, on the day before the meteorite shower in Russia, on February 14, local time, a team of scientists from the University of California at Santa Barbara and the California Institute of Technology announced a novel plan: use solar energy to build a giant laser beam phased Array to monitor and advance the destruction of asteroids that threaten the Earth.

Philip Rubin, a professor of physics at the University of California, Santa Barbara, said in a statement on behalf of his team of scientists: “We must use logical and rational methods to discuss some of the issues we face. We need to act in advance rather than threaten. Only when we come to respond passively, avoiding and obscuring is not the way. In fact, we can make a difference, and we must be able to make a difference. So, let's start taking action right now. Let's start small Start with, and you don't need to spend any resources at first."

Rubin called "advanced action" an artificial celestial system they called "DE-STAR." Its basic principle is: use solar energy to construct a huge laser beam phased array. If an asteroid visits it, it can be locked in time and burned.

“The system is actually nothing unusual.” Gary Hughes, a researcher at the California Institute of Technology, said in a statement, “All the components needed for the system are ready, but their size is not as large as we want.” To increase the size may be a challenge - but the basic elements are already there and we can start now."

According to the Hughes team's vision, the scale of the system is very complex, the required equipment is as small as a desktop, the large diameter can reach 10 kilometers, and the performance will increase as the scale increases. For example, the DE-STAR2 system is only 100 meters in diameter, about the same size as the International Space Station. It can push the comets and asteroids that threaten the earth away from the original orbit. The DE-STAR No.4 system with modular assembly may reach 2 At 100 times the number system, it can emit 1.4 trillion tons of energy each day. Within a year, it can melt an asteroid 500 meters in diameter.

The Hughes team claimed that their ideas are also of great value for the development of asteroid mineral deposits and deep space travel. For example, the DE-STAR system can be used to evaluate the composition of an asteroid and infer which rare elements it may contain. The larger DE-STAR 6 system can also be used as a huge orbital energy source. With it, intergalactic navigation does not have to carry. Heavy energy package.

According to reports, the team is currently preparing a proposal for submission to peer review.

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