Neptune’s in there, too, within 3° to the upper right of the moon, but twilight is just too much for the eighth-magnitude planet. One last morning chance for the moon: On the 26th, in bright twilight ...

The Winter Hexagon is a six-sided figure whose end points include Sirius, the sky’s brightest star, along with three more of the top 10 brightest: Capella, Rigel, and Procyon. Good luck!

A few years later, in the winter of 1992-93, the complementary LTC scheme was launched. The aim was to monitor the relative importance of intertidal feeding areas within estuaries. In that first year, ...