Space terrorism, floating debris pose threats to US
Because the US depends so much on its holdings in space for a variety of operations, and as it is the “primary guarantor of space access,” it has more at stake in protecting its satellites from an attack or damage from another country’s debris, according to a report from the Council on Foreign Relations (CFR).
“Threats to U.S. satellites would reduce the country's ability to attack suspected terrorists with precision-guided munitions and conduct imagery analysis of nuclear weapons programs, and could interrupt non-cash economic activity depending on the severity of the attack and number of satellites disrupted,” wrote Micah Zenko, the Douglas Dillon Fellow at the CFR’s Center for Preventive Action and the report's author.
The report identifies China, North Korea, and Iran – all working to further their military space presence – as the top suspects for targeting US space capabilities.
Should one of those countries attain advanced space operations, they could, in theory, attack a US satellite for leverage in negotiations, to ward off potentially hostile acts, or to act in defense in the face of pending conflict, the report continues.
Yet the report also goes on to state that terrorism may not be as big of an issue for US interests as the threat posed by space debris scattered by various countries.
“The U.S. National Research Council estimates that portions of LEO [low earth orbit] have reached a ‘tipping point,’ with hundreds of thousands of space debris larger than one centimeter stuck in orbit that will collide with other pieces of debris or spacecraft, thus creating exponentially more debris,” according to the report.
“Significant growth in the quantity or density of space debris could render certain high-demand portions of outer space unnavigable and inutile. Currently, there are no legal or internationally accepted means for removing existing debris.”
China is especially flippant about its profuse space junk, Zenko wrote.
“A January 2007 direct ascent ASAT [anti-satellite test] carried out by China against its defunct Fengyun-1C weather satellite instantly increased the amount of space debris in low earth orbit…by 40 percent. Debris is especially problematic in LEO, where half of the world's 1,100 active satellites operate. Space objects – even flecks of paint – travel as fast as eighteen thousand miles per hour and can cause catastrophic damage to manned and unmanned spacecraft – creating even more debris in the process.”
The report says that unintended damage to a US or ally satellite could spur a “major international crisis” between the US and China.
“The risk is heightened by the fact that both countries have no pre–space-launch notification arrangements, similar to the U.S.-Russia agreement on notifications of intercontinental ballistic missile (ICBM) and submarine-launched ballistic missile (SLBM) launches.”
Given the amount of reliance on space for crucial state operations, and because it is the leader in space technology and exploration, the US has “a unique obligation to lead international efforts to prevent or mitigate a dangerous space event,” according to the report. It goes on to recommend a variety of technical and political adjustments that the US should implement to maintain its policy objectives.