According to reports in Foreign Policy magazine China shot down a second satellite earlier this year. China previously shot down another of its own satellites in early 2007.
While many connect the test with China´s displeasure at Taiwan´s efforts to secure the Patriot missiles China-based military expert Peng Guangqian says the tests would have required significant preparation time and may be unrelated.
China reportedly says the test was defensive only and not aimed at anyone in particular. Peng also said that China has been a vocal supporter of keeping outer space demilitarised - something the US refuses to comment on.