As the Moon reaches its full phase, look for lunar libration. Also, scan the skies for some of winter’s finest deep-sky treats

Mercury will pass near Saturn this week, as the Moon waxes toward its full phase next week.

As Earth reaches perihelion, look for Mercury at greatest eastern elongation and the Moon at its first quarter.

The James Webb Space Telescope has unfurled its sunshield in space. But there are a few more steps before the Canadian team can work on its part

This month, Venus will be closer to Earth than any planet has been in a century. Find out what else the planets in our Solar System are doing this month.

Venus and Mercury spend the week dancing after sunset, while the Moon and Mars meet. Also, look for the Quadrantid meteor shower.

This week, we’ll mark the December solstice, the longest night of the year in the Northern Hemisphere. Also look for Ursid meteors and a meetup between Mars and Antares.

After years of delays, the James Webb Space Telescope is poised to launch. What new worlds can we hope to see through it?

Look for the Geminid Meteor Shower this week as the Moon waxes to full and Venus lines up with Jupiter and Saturn.

It’s an eventful week — the Moon meets Venus, Jupiter, Saturn and Neptune, while Comet Leonard graces pre-dawn skies.