‘Radiation hardened’ PlayStation chip guides probe to Pluto
The chip is the MIPS R3000 CPU; it was used in the original Sony PlayStation, which ran games from the Final Fantasy and Metal Gear Solid franchises.
It is being used to control thrusters, guidance, and other systems in order to help direct the probe to Pluto. This particular chip is “radiation hardened,” Escapist magazine reported.
While the PlayStation uses a 33 MHz R3051 CPU, the New Horizons spacecraft uses a 12 MHz Mongoose-V CPU.
“It is found in workstations and servers designed by companies such as Evans & Sutherland, DEC, Silicon Graphics, Tandem Computers and Whitechapel Workstation. Most notably, it was the CPU chosen for the original PlayStation game console from Sony,” an Imagination spokesman told Electronics Weekly, “and is still being used by Toshiba in a range of microcontrollers.”
The New Horizons spacecraft has “awoken” some seven years after its initial launch, when it woke briefly to take a look at Jupiter. It is now some 3.5 billion miles from the Sun, and is expected to start orbiting the dwarf planet this summer.
“The spacecraft is entering the first of several approach phases that culminate July 14 with the first close-up flyby of the dwarf planet, 4.67 billion miles (7.5 billion kilometers) from Earth,” NASA said in a release on Thursday.
“We’ve completed the longest journey any spacecraft has flown from Earth to reach its primary target, and we are ready to begin exploring,” said Alan Stern, New Horizons principal investigator from Southwest Research Institute in Boulder, Colorado.
Along with entering into Pluto’s orbit – as well as that of its moons – New Horizons will explore objects discovered by the Hubble Space Telescope along the Kuiper asteroid belt.
However, it won’t be until late 2016 that the New Horizons team submits its proposal to NASA for an extended mission.
In addition to the chip, there are nine further “hidden” items aboard the spacecraft. Among them are some of the ashes of Pluto discoverer Clyde Tombaugh, which were attached to the craft alongside a “Send Your Name To Pluto” CD-ROM – on which are the names of some 434,000 people who wanted to put their names on board. Two state quarters are also on board, among other items.
NASA likes to lean on older technology; an IBM processor made back in 2002 is being utilized on its Orion spacecraft, which is aiming to head to Mars.