This huge star map tapestry is the work of Australian maker Sarah Spencer, who created it by hacking a 1980s-era knitting machine. Yes, this thing was knitted: it apparently took more than 100 hours and 15 kg (33 lbs) of (locally sourced Australian) wool to produce this 4.6×2.8-metre (15×9-foot) monster, which is accurate (with the caveat that an equatorial projection distorts familiar circumpolar constellations) and reasonably detailed: the constellations are labelled and the stars’ apparent magnitude is indicated. Space.com has the story. [Boing Boing]