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NASA tests power system to support manned missions to Mars
by Pete Musto for VOA
Washington DC (VOA) Jan 30, 2018


File image of the Kilopower reactor.

United States government agencies say the first tests of a very small nuclear power system designed for missions to Mars have been successful.

The American space agency NASA and the Department of Energy recently announced the results in Las Vegas, Nevada.

The officials said they will carry out a full test of the system in March.

The project to design a small nuclear fission system is called Kilopower. Testing began last November at the Department of Energy's Nevada National Security Site.

The goal is to provide energy for future missions in space and possibly on the surface of Mars and other planets in our solar system.

NASA astronauts visited the surface of Earth's moon six times between 1969 and 1972. But establishing a long-term colony on the surface of the moon or another planet is more difficult. Such missions need a power source strong enough to support a base but small and light enough for transport through space.

Steve Jurczyk is the associate administrator of NASA's Space Technology Mission Directorate. He told the Reuters news service that the Martian environment presents problems.

He said, "Mars is a very difficult environment for power systems, with less sunlight than Earth or the moon, very cold nighttime temperatures, very interesting dust storms that can last weeks and months that engulf the entire planet."

He said that Kilopower's small size and strength make it possible to transport several of the systems on a single landing vehicle. They would then be able provide a colony or base with tens of kilowatts of power.

Lee Mason is NASA's expert on power and energy storage. He said Mars has been the main goal of the Kilopower project. He also noted that a human mission to Mars likely would require 40 to 50 kilowatts of power.

Dave Poston is the chief reactor designer at the Los Alamos National Laboratory. He said that testing on parts of the system have been "greatly successful."

"The models have predicted very well what has happened, and operations have gone smoothly," he noted.

NASA's test design of the nuclear power system uses a reactor core made of the substance uranium-235. The core is about the size of a roll of paper towels.

The technology could power life-support systems for people. It could help astronauts mine for resources, recharge vehicles and run equipment. Some equipment could change things such as ice on the planet into oxygen, water and fuel.

Experts think Kilopower could also possibly improve electrically powered spacecraft engines on missions to the outer planets of our solar system.

Will Dunham reported this for the Reuters News Service. Pete Musto adapted it for VOA Learning English. Mario Ritter was the editor.

MARSDAILY
Next Mars Analog mission will help improve efficiency and reduce dust exposure
Daytona Beach, FL (SPX) Jan 18, 2018
As NASA and others look to return humans to the Moon for longer durations, lunar dust remains an industry concern. Apollo mission crew members described the dust as similar to sandpaper, having a texture like graphite and scent similar to gunpowder, causing throat and skin irritation, and respiratory issues. The extreme abrasiveness of the dust was reported to eat through layers of gloves ... read more

Related Links
Kilopower at NASA
Mars News and Information at MarsDaily.com
Lunar Dreams and more


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