The Leonid Meteor Shower has long passed us by, but that doesn’t mean that there aren’t any good meteor displays to look forward to. In fact, one of the best is just around the corner, scheduled to reach its peak during the early hours of Tuesday, Dec. 14: The Geminid Meteors.

The Geminids get their name from the constellation of Gemini, the Twins. During the overnight hours of December 13-14—the night of this shower’s maximum—the meteors appear to emanate from a spot in the sky near the bright star Castor in Gemini.

Should the sky be clear where you live early Thursday morning, you'll have an opportunity to catch a glimpse of the annual Leonid Meteor Shower. A decade ago, this was a truly exciting event to watch, with the prospects of seeing more "shooting stars" in a single night than you might have previously seen in your entire life.

But the circumstances were different a decade ago.

The Leonids are particles of dust ejected from the nucleus of Comet Tempel-Tuttle. Back in 1998, when the comet swept around the Sun, it was accompanied by several dense trails of this dusty debris. Since the comet's orbit nearly intersects the Earth's in mid-November, when our planet crossed paths with those dense dust trails, the result were meteors falling at rates in the hundreds, even thousands per hour.

But the comet has long since moved back out into the depths of space and has taken those dense dust trails with it. So now, when we cross paths with the comet orbit in mid-November, there isn't much dust to interact with.

So the pickings this year are slim with probably not much more than a dozen meteors per hour appearing at their peak on Thursday morning.

What's worse, the Moon will be approaching Full, which means it will light up the sky and squelch many of the fainter Leonid streaks. However, that brilliant Moon will set around 3:45 a.m. on Thursday; dawn will break at around 5:15 a.m. If you want to try and see anything, then you should target those 90-minutes; that's when you'll get your best shot.

It might actually be worth getting up to take a look, since every once in a while with the Leonids, there will come an outstandingly brilliant meteor known as a fireball. Perhaps along its flight, a fireball will silently explode in a fiery flash of light. Such meteors are called bolides. And the resultant trail might hang in the sky for many seconds or minutes. I saw just such and photographed just such a meteor from Pennsylvania back in 1996.

Just the sight of a singular object like THAT can make getting up early on a chilly November morning worthwhile. If you're curious enough to get up on Thursday to take a look, remember that the best time will be between moonset and the break of dawn: 3:45 to 5:15 a.m. The Leonids will appear to dart out from the "Sickle" of Leo, a backwards question mark pattern of stars, which will be high in the southeast sky. Don't expect to see much, especially if you live in an area with lots of bright lights or tall obstructions. Even under a dark country sky, you might have to wait five or six minutes between meteor sightings.

I would also recommend that you bundle up warmly. . . perhaps lie down on a long lawn chair.

In December, we'll have two super sky events to look forward to: The Geminid Meteor Shower (which is about 10 times better than the Leonids) and a Total Lunar Eclipse!

Clear skies over these next few nights and enough personal stamina to stay awake will afford a view of one of the flashiest meteor displays of the year. The annual Perseid Meteor Shower has been slowly ramping up in intensity since this past weekend and viewers from around the world have been delighted by views of these bright streaks of light darting across the night sky. In some special cases, they’ve put on spectacular—albeit brief—shows.

On Saturday, Ernõ Berkó from Ludányhalaszi, Hungary witnessed a Perseid that he estimated at magnitude -10; more than one-hundred times brighter than the planet Venus (which, along with Mars and Saturn currently adorns the southwest sky right after sunset).

Excellent New England weather last weekend brought more than a thousand amateur astronomers to the 75th Stellafane Convention, just outside of Springfield, Vermont. While the emphasis was on observing the sky with telescopes, many participants also enjoyed the views of an occasional Perseid cutting a path across the sky. Every time one was seen, the watchers said: “Ooooohh!” Steve Lieber of the Astronomical Society of Long Island (ASLI) notes: “On Saturday night, one bolide (exploding meteor) lit up the field. Looked like a flash going off. Saw the vapor trail for 15-20 seconds after that.” And the best is yet to come!

The peak of this year's Perseids is forecast (for North America) to come during the afternoon hours on Thursday (Aug. 12), which means that greatest number of meteors will probably be seen late that night into the predawn hours of Friday. At these times a single observer might count anywhere from 60 to 100 per hour.

But don’t overlook late Wednesday night (Aug. 11) into early Thursday morning, when about two-thirds of that number might be seen. And even late on Friday night (Aug. 13) into early Saturday hourly rates will still be respectable, though probably numbering about one-quarter to one-half of the numbers seen on the peak night. Over this upcoming weekend you can still probably catch sight of a lingering few.

Comet Crumbs

The Perseids are the remnants of Comet Swift-Tuttle, which last visited the inner solar system in 1992. Every August, like clockwork, our planet Earth cuts through the “river of rubble” left behind along the orbit of the comet. And yet, while comets are composed chiefly of frozen gas, meteors are very flimsy. They’re material that has flaked off comets and they’re similar in consistency to cigar ash; they litter up our solar system. Most are scarcely larger than pebbles or sand grains. In the case of the Perseids, they come crashing into Earth’s atmosphere at estimated speeds as high as 37 miles per second—133,000 miles per hour. These tiny visitors from the cold, vast voids of stellar space, have been orbiting in the solar system for perhaps hundreds or even thousands of years, but cannot survive the shock of entry, and end up streaking across the sky in a brief, blazing finale lasting but a few seconds. Their kinectic energy is used up in such processes as the production of light, heat and ionization. Thus, such a tiny particle bursts into incandescence from friction, producing the shooting star effect and can be seen from more than 100-miles away.

But it’s really the light energy it develops, not the particle itself that we see.

Observing Tips

Astronomers offer this advice: Get as far away from bright city lights as you can, although a few of the brightest meteors may be glimpsed even over the sooty curtain of large, light polluted metropolitan areas. Hope for a clear, dry night. You can start your watch as early as 10 p.m., although the best views will come between 2 a.m. and the first light of dawn. Any lawn or rooftop can serve as an observatory when it comes to meteor watching. Relax in a lawn chair and scan the heavens from the south over toward the northeast. They are named the Perseid meteors because their fiery trails, if extended to a common point of intersection, would seem to originate near to the Double Star Cluster in the constellation Perseus , which on mid August evenings rises from the northeast.

But their associated meteors could make their fiery plunges into the atmosphere over a wide range of the sky. As the night progresses, the stars of Perseus, which lies low to the northeast horizon before midnight, will slowly climb progressively higher into the sky. During the first part of the night, the meteors may appear to describe rather long paths across the heavens; after midnight they’ll appear more like short, swift streaks. As has already been noted, some Perseids leave particularly long-enduring trains in their wake. With binoculars one can see these trains drifting against the backdrop of the stars, indicative of swift winds in the very high atmosphere. But generally speaking, binoculars and especially telescopes are not particularly recommended because your unaided eyes can take in much larger areas of the sky.

And there is absolutely no danger in getting hit by a Perseid because they are consumed high above our heads at altitudes of 60 to 80 miles. One former Chief Astronomer at the Hayden Planetarium, the late Dr. Kenneth L. Franklin, often would point out that the only dangers from watching a Perseid shower is getting drenched in dew and falling asleep.

For those who sleep through the Perseids, the next really prominent meteor shower will come in mid-December, the time of the Geminid Meteors.