Among the most closely observed objects are two recently launched robotic space planes, smaller versions of the space shuttle. America’s x37-b lifted off from Cape Canaveral on December 28th (pictured). China’s Shenlong, or Divine Dragon, was lofted a fortnight earlier. Both missions are largely secret. Space planes’ ability to undertake long missions, deliver and capture payloads, change orbit and return to Earth to refuel make them potentially important weapons. Russia launched Cosmos 2570 in October, the latest “nesting doll” in orbit: it released a second satellite, which then let out a third. DO you think that Russia is ahead in space compared to America?

