The elusive planet Mercury is strutting its stuff this month. Mercury – the closest world to the Sun – is never far from our local star in the sky, and hardly ever leaves its glare. But this month is the best time this year to spot the smallest planet in our Solar System. Look for it low in the west around6.30 pm between 10–21 February. Currently, NASA’s spaceprobe Messenger is in orbit around this tiny world, scrutinizing the planet’s cratered surface. It has already discovered water in Mercury’s thin atmosphere, and has detected evidence for volcanic activity in the past.