Space Robots May Service Satellites

weather-satellite_w553_h725Two companies are building robots to service dying satellites and keep them functioning in orbit. The question with the idea is whether or not this process would save money over the current practice of abandoning and/or replacing the dead satellites. At this time, it just does not seem financially feasible to have robots repair or refuel satellites even though the technology certainly is at the level needed to carryout these operations.


Photo Credit: NASA

Robotic droids prepared to extend lives of satellites
Orbiting our planet is a vast multitude of satellites, some long dead and some still carrying out their mission. Once a satellite breaks down it's nearly impossible to fix it due to the massive costs of sending a specialized crew of astronauts to get
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Robotic droids prepared to extend lives of satellites –
Tue, 15 May 2012 16:17:55 GMT

Spherical Robots Practice Formation Flying in Space

NASA has this experiment onboard the International Space Space to test the concept of robot flying in formation and performing other manuevers in space. 

The NASA website explains, “Synchronized Position Hold, Engage, Reorient, Experimental Satellites (SPHERES) are bowling-ball sized spherical satellites.  Three free-flying spheres can fly within the cabin of the Space Station, performing flight formations. Each satellite is self-contained with power, propulsion, computers and navigation equipment. The results are important for satellite servicing, vehicle assembly and formation flying spacecraft configurations.”

It would seem that these little robots could be great assistants for the astronauts.  They could hold cameras, carry tools, or they could provide lighting for work situations.  I don’t know if they are being considered for that work, but they should.  Read the stories at the links below for more information.


Photo Credit:  NASA

“MIT has had a set of robots called SPHERES (Synchronized Position Hold, Engage, Reorient Experimental Satellites) on board the International Space Station since May of 2006 to test out algorithms for autonomous navigation and docking maneuvers. Each sphere is about 8″ in diameter and has 18 sides. They gets around with 12 thrusters powered by compressed CO2, while ultrasonic and infrared sensors and a wireless link tell them where they are. SPHERES are able to maneuver precisely enough to dance around in a circle on the ISS; watch as a third robot enters the pattern:

The idea behind SPHERES is that a bunch of small satellites working together is much cheaper, much more efficient, and much more robust than one single large satellite. It’s swarm robotics, up in space.”  From BotJunkie

The following sites provided source materials for this article



MIT Spheres

Danger Room

Spherical Robots Dance In Space
Evan Ackerman
Thu, 21 Jan 2010 11:55:49 GMT