Herschel, the largest infrared space telescope yet flown, was launched a month ago by the ESA and was not expected to deliver images for another few weeks. It has, however, already produced images- in three colors- of M51, ‘the whirlpool galaxy,’ from a test observation run. The goal of the test was to get a large image and a sense of what Herschel will deliver in the future.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.