On Monday night, the moon serves as a signpost for one of the ultimate naked-eye astronomy challenges. Uranus, the seventh planet of the solar system, hovers at the very limit of naked-eye visibility.
To stand any chance of seeing the planet, which orbits 19 times further from the sun than the Earth, you will need to be under the darkest sky you can possibly find. For most of us, a pair of binoculars will be needed.
