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Sky Watch by J. Alex Knoll

Can you spot the naked-eye five?

As the sun sets, look to the southwest for Venus. With a clear view of the horizon, you might spy Mercury below and to the right of Venus at week’s end, but the innermost planet’s viewing days are numbered. Roughly 15 degrees above Venus, look for the ruddy glow of Mars.

Even invisible, it tugs our tides mightily

Look for the waning crescent moon in the southeast before dawn Friday. Golden Saturn is just a couple degrees above, while fiery Antares is less than 10 degrees below. The trio rises around 4am, and by 6am they are well placed above the southeast horizon.

The sky is awash in the sun’s absence

While winter has only just begun, it’s heartening to know that a little more sunshine is creeping into our lives day by day. Since a month ago, we’ve gained 15 minutes of light at day’s end, with sunset now after 5pm. Monday marked the latest sunrise of the year, at 7:25, and although it’s a slow go at first, that time will inch earlier hereafter. Heck, before you know it will be summer.

The Geminid meteors are unique

This week’s celestial highlight is the annual Geminid meteor shower, which peaks late Saturday and before sunrise Sunday. This coincides with the rising waning moon, which just shy of last-quarter still shines quite bright. Fortunately, the Geminids are some of the brightest “shooting stars,” and given patience and a dark spot away from urban glare, you could still expect to see one or two meteors each minute. Plus the Geminids generate a fair number of meteors for several days before and after the peak.

When there aren’t 24 hours in a day

The full moon rises at sunset Friday and sets at daybreak Saturday morning. Look for it less than about two degrees from Aldebaran, the heart of Taurus the bull. December’s full moon is known as the Cold Moon, the Long Night Moon and the Moon Before Yule. And as we approach winter solstice, these are the longest nights of the year.

Constellation joins moon and Jupiter, hosts meteors

As twilight gives way to darkness, look for Mars low in the south-southwest. At first magnitude, the red planet is no brighter than your average star, so scouring the horizon with binoculars may help you find it. Can you make out the teapot shape of Sagittarius below? Mars is just above the handle, while the spout points toward the now-set sun.

The lonely star swims with the fishes

Thursday’s full moon is known as the Beaver Moon or the Frosty Moon. It rises around sunset and sets around sunrise. Friday and Saturday the moon is with Taurus, the bull’s red eye Aldebaran high to the left and the Pleiades star cluster higher still. Monday night look for the moon near the Gemini twins Castor and Pollux.

Halloween falls right in between

The waxing moon reaches first-quarter Thursday, and as darkness falls on Halloween, it shines high in the south, with the bright star Fomalhaut almost straight below.     As a holiday, Halloween stretches back thousands of years, but not as a day of costumes and trick-or-treating. It coincides with earth’s path around the sun, falling midway between autumnal equinox and winter solstice.

Even eclipsed, this star blinds

If you didn’t already know about the partial solar eclipse just before sunset Thursday, you’re not likely to have solar glasses at the ready. Do not look at the eclipsed sun for even a moment as it can cause lasting eye damage or blindness. But you can still watch safely with little preparation.

It’s a crowded solar system

If you’ve been out before dawn you’ve likely seen Jupiter blazing in the east. Early Friday morning, the gaseous giant shines left of the waning crescent moon. The following morning you’ll find it above the moon and forming a loose triangle with the star Regulus, the heart of Leo the lion.