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Wednesday, October 19, 2011

Greek police try to quell protesters with stun grenades

Strike, held ahead of vote on fresh package of tax increases and spending cuts, described as largest in years

ATHENS, Greece — Demonstrators on Wednesday threw stones and gasoline bombs at police outside parliament during a two-day general strike that unions described as the largest in years.

The protest, which has grounded flights, disrupted public transport and shut down shops to schools in Greece, comes ahead of a parliamentary vote on a fresh package of tax increases and spending cuts required by international creditors in return for crucial bailout cash. Without the money from its partners that use the euro and the International Monetary Fund, Greece has said it will run out of money within a month.
Most of the 70,000 or so protesters that have converged in central Athens have marched peacefully, but chaos unfolded outside the parliamentary building as crowds clashed with police who tried to disperse them with tear gas. Some people set fire to a presidential sentry post.

Nearby, groups of protesters tore chunks of marble off building fronts with hammers and crowbars and smashed windows and bank signs.

In the city of Thessaloniki, protesters smashed the facades of about 10 shops that defied the strike and remained open, as well as five banks and cash machines. Police fired tear gas and threw stun grenades.
All sectors, from dentists, state hospital doctors and lawyers to shop owners, tax office workers, pharmacists, teachers and dock workers walked off the job ahead of a Parliamentary vote Thursday on new austerity measures which include new taxes and the suspension of tens of thousands of civil servants.

Flights were grounded in the morning but some resumed at noon after air traffic controllers scaled back their initial strike plan from 48 hours to 12. Dozens of domestic and international flights were still canceled throughout the day. Ferries remained tied up in port, while public transport workers staged work stoppages but were to keep buses, trolleys and the Athens metro running for most of the day.


In Parliament, Finance Minister Evangelos Venizelos told lawmakers that Greeks had no choice but to accept the hardship.
"We have to explain to all these indignant people who see their lives changing that what the country is experiencing is not the worst stage of the crisis," he said. "It is an anguished and necessary effort to avoid the ultimate, deepest and harshest level of the crisis. The difference between a difficult situation and a catastrophe is immense."

About 3,000 police deployed in central Athens, shutting down two metro stations near Parliament as protest marches began. Police estimated the crowd at least 70,000.

Protesters converged on the square in front of Parliament, banging drums, chanting slogans against the government and Greece's international creditors who have pressured the country to push through rounds of tax hikes and spending cuts.

At least 15,000 demonstrators also gathered in Thessaloniki, Greece's second-largest city.
"We just can't take it any more. There is desperation, anger and bitterness," said Nikos Anastasopoulos, head of a workers' union for an Athens municipality. Other municipal workers said they had no option but to take to the streets.
"We can't make ends meet for our families," said protester Eleni Voulieri. "We've lost our salaries, we've lost everything and we're in danger of losing our jobs."

Garbage festering on street corners 
Demonstrations during a similar 48-hour strike in June left the center of Athens convulsed by violence as rioters clashed with police on both days while deputies voted on another austerity package inside Parliament.
"We expect that the strike could be the largest" in decades, said Ilias Vrettakos, deputy president of the civil servants' union ADEDY.
"The fact that other sections of society that are suffering from government policies are also participating gives a new dimension to the social resistance by workers and the people in general, and we hope that this mobilization will have an impact on political developments."

Piles of garbage festered on street corners despite a civil mobilization order issued Tuesday to order garbage crews back to work after a 17-day strike. Earlier in the week, private crews were contracted to remove trash from along the planned demonstration routes, but mounds remained on side streets, along some of the march routes and in city neighborhoods.

Protesting civil servants have also staged rounds of sit-ins at government buildings, with some, including the Finance Ministry, being under occupation for days.


Greek Finance Minister Evangelos Venizelos appealed for government support on Wednesday.
"We are in an agonizing but necessary struggle to avoid the final and harshest point of the crisis," Venizelos told deputies ahead of the vote.
He said he hoped for a substantial, definitive solution to the crisis after a European Union summit meeting on Sunday.
"From now and until Sunday we are fighting the battle of all battles," he said.
Prime Minister George Papandreou appealed on Tuesday for the protests to end.
"I would like to ask all those who occupy ministry buildings, choke the streets with garbage, close off ports, close off the Acropolis, if this helps us stand on our feet again — of course it does not," Papandreou told parliament.


Papandreou promised to resist pressure from the streets and prove Greece's determination to save itself.
"All these people who are blackmailing and holding up the whole country, by occupying buildings, filling streets with rubbish, shutting down ports, the Parthenon, have to explain to us whether this is helping us stand on our feet," he said.

Most stores in the city center, including bakeries and many of the ubiquitous kiosks which sell everything from newspapers, cigarettes and chewing gum to tourist trinkets and snacks, were shut Wednesday. Several shop owners said they had received threats that their stores would be smashed if they attempted to open during the first day of the strike.

Trapped in the third year of deep recession and strangled by a public debt amounting to 162 percent of gross domestic product which few now believe can be paid back, Greece has sunk deeper into crisis, despite repeated doses of austerity.

International lenders, who are providing the funds Athens needs to stay afloat after it was shut out of bond markets last year, have expressed impatience at the slow pace of reform as Greece has slipped behind on its budget targets.

There has been growing talk that Athens should be placed under tighter supervision by EU authorities to ensure it meets its reform obligations.


Squeezed between escalating popular protests against the cuts already imposed and demands from the EU and International Monetary Fund for even tougher action, Papandreou's support has appeared increasingly uncertain.

Although the government has repeatedly ruled out early elections, many political analysts now believe that a snap ballot will probably be held some time in the coming months.

What's at stake 
A first vote on the overall bill will be held on Wednesday night, with a second vote on specific articles expected some time on Thursday.

The measures to be voted on Thursday come after more than a year and a half of repeated spending cuts and tax increases, and include tax hikes, further pension and salary cuts, the suspension on reduced pay of 30,000 public servants out of a total of more than 750,000, and the suspension of collective labor contracts.

A communist party-backed union has vowed to encircle Parliament Thursday in an attempt to prevent deputies from entering the building for the vote.

The reforms have been so unpopular that even some lawmakers from the governing Socialists have indicated they might vote against at least some of them.

But Greece must pass the bill if it is to continue receiving funds from its €110 billion international bailout. Unless it receives the now long overdue disbursement of an €8 billion installment, it has said it will run out of funds to pay salaries and pensions by mid-November.

Meanwhile, European countries are trying to work out a broad solution to the continent's deepening debt crisis, ahead of a weekend summit in Brussels. It became clear earlier this year that the initial bailout for Greece was not working as well as had been hoped, and European leaders agreed on a second, €109 billion bailout. But key details of that rescue fund, including the participation of the private sector, remain to be worked out.

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Sunday, October 16, 2011

The Sky this Week

October 14–23, 2011
Your daily digest of celestial events coming soon to a sky near you. By Richard Talcott n

Friday, October 14 
Jupiter’s colorful atmosphere proves visually
stunning through a telescope of any size.
NASA/ESA/H. Hammel (SSI)/Jupiter Impact Team

Brilliant Jupiter rises around 7 p.m. local daylight time this week, while twilight still glows in the west. The giant planet climbs the eastern sky during the evening hours and appears highest in the south around 2 a.m. Shining at magnitude –2.9, Jupiter is the night’s brightest celestial object with the exception of the waning gibbous Moon, which appears about 15° from the planet this evening. When viewed through a telescope, Jupiter’s disk spans 49" and shows incredible detail in its cloud tops.





Saturday, October 15
Comet C/2009 P1 (Garradd) shines
at 7th-magnitude this week as it moves
westward through southeastern Hercules.
Astronomy: Kellie Jaeger
The waning gibbous Moon lies near the Pleiades star cluster (M45) this morning. At 4 a.m. local daylight time, the cluster stands 4° directly above the Moon. Use binoculars for the best views of this exquisite conjunction.


Sunday, October 16
Comet C/2009 P1 (Garradd) remains the sky’s brightest comet this week. The 7th-magnitude object moves westward against the background of southeastern Hercules. This evening, the comet passes a fraction of a degree due south of a similarly bright star (SAO 103110), although the pointlike star will appear brighter than the fuzzy comet. You can find this region high in the west shortly after darkness falls.

Monday, October 17
If you like observing challenges, head outside this evening without any optical aid. Uranus glows at magnitude 5.7, bright enough to glimpse with naked eyes under a dark sky. The planet reached opposition and the peak of its 2011 apparition in late September, and it remains a fine sight. Around 9 p.m. local daylight time, Uranus lies about halfway from the southeastern horizon to the zenith. To find it, start your search with Alpheratz and Algenib, the two stars that form the eastern edge of the Great Square of Pegasus. Draw an imaginary line between these two and then extend it an equal distance to the lower right. Uranus is the brightest object in this region. If you can’t see it with naked eyes, or if you live in a light-polluted area, binoculars will bring the planet into view.

Tuesday, October 18 
Asteroid Ceres glows at 8th magnitude
as it slides westward against the backdrop
of southeastern Aquarius.
Astronomy: Kellie Jaeger

Binoculars also will reveal the asteroid 1 Ceres this week as it moves slowly westward against the backdrop of southeastern Aquarius. The 8th-magnitude object lies about 1° southwest of the 5th-magnitude star 106 Aquarii, which serves as a convenient guide for finding the solar system’s largest asteroid. This region lies in the southeast after darkness falls and appears highest in the south around 11 p.m. local daylight time.




Wednesday, October 19
Last Quarter Moon occurs at 11:30 p.m. EDT. Our celestial neighbor will rise around midnight and appear almost exactly half lit. The Moon resides on the border between the constellations Gemini the Twins and Cancer the Crab.

Thursday, October 20
Around 6 a.m. local daylight time, just as twilight starts to paint the morning sky, Mars lies about halfway from horizon to zenith in the east-southeast. The Red Planet crossed from Cancer the Crab into Leo the Lion a couple of days ago and is making a beeline toward the Lion’s brightest star, Regulus. The two will have a close conjunction in November. Mars shines at magnitude 1.2 and stands out by virtue of its orange-red color.

Friday, October 21
Look low in the west-southwest early this evening and you might glimpse Venus. From 40° north latitude, the brightest planet lies just 2° above the horizon 30 minutes after sunset (from 25° north latitude, it appears 5° high). Even though it shines at magnitude –3.8, Venus will be hard to pick out of the twilight glow. If you can’t spot it with naked eyes, binoculars will help bring it into view.

Saturday, October 22 
The Orionid meteor shower
must compete with a waning crescent Moon
at its peak October 21/22.
Astronomy: Kellie Jaeger

If you’re out between midnight and dawn, you’ll likely see a number of bright streaks peppering the sky. These are Orionid meteors, which belong to an annual shower that peaks the night of October 21/22. The best views this year should come around 2 a.m. local daylight time on the 22nd, shortly before the waning crescent Moon rises. At its peak, the shower produces about 20 meteors per hour radiating from the northern part of the constellation Orion the Hunter.




Sunday, October 23
The variable star Algol in Perseus reaches minimum brightness at 3:53 a.m. EDT. If you start watching it late yesterday evening, you can see its brightness diminish by 70 percent (its magnitude drops from 2.1 to 3.4) over the course of about 5 hours. This eclipsing binary star runs through a cycle from minimum to maximum and back every 2.87 days. Algol appears in the northeast during evening hours and passes nearly overhead around 2 a.m. local daylight time.

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"Failed stars" galore with one youngster only six times heftier than Jupiter

One cluster contains a surprising surplus of brown dwarfs; it harbors half as many of these astronomical oddballs as normal stars. By Subaru Telescope Facility, Hilo, Hawaii

This photograph combines optical
and infrared images taken with the Subaru Telescope.
Brown dwarfs newly identified by the SONYC Survey
are circled in yellow, while previously known brown
dwarfs are circled in white. The arrow points
to the least massive brown dwarf known in NGC 1333;
it is only about six times heftier than Jupiter.
Credit: SONYC Team/Subaru Telescope 
An international team of astronomers has discovered more than 24 new free-floating brown dwarfs that reside in two young star clusters. One brown dwarf is a lightweight youngster only about six times heftier than Jupiter. What's more, one cluster contains a surprising surplus of brown dwarfs; it harbors half as many of these astronomical oddballs as normal stars. These findings come from deep surveys and extensive follow-up observations using the Subaru Telescope in Hawaii and the Very Large Telescope (VLT) in Chile, two of the world's largest optical-infrared telescopes.

Sometimes described as failed stars, brown dwarfs are unusual celestial objects that straddle the boundary between stars and planets. When young, they glow brightly from the heat of formation, but they eventually cool down and end up with atmospheres that exhibit planet-like characteristics.

During the course of the Substellar Objects in Nearby Young Clusters (SONYC) Survey, astronomers used the Subaru Telescope to take deep images of NGC 1333 and the Rho Ophiuchi star cluster at both optical and infrared wavelengths. Once they identified candidate brown dwarfs from their red colors, the research team verified their nature with spectra taken at Subaru and the VLT.

The six-Jupiter-mass brown dwarf found in the NGC 1333 cluster is one of the puniest free-floating objects known. "Its mass is comparable to those of giant planets, yet it doesn't circle a star. How it formed is a mystery," said Aleks Scholz from the Dublin Institute for Advanced Studies in Ireland.

Several other newly identified brown dwarfs in both the NGC 1333 and Rho Ophiuchi clusters have masses that are less than 20 times the mass of Jupiter — placing them at the low end of the mass range for known brown dwarfs. "Brown dwarfs seem to be more common in NGC 1333 than in other young star clusters. That difference may be hinting at how different environmental conditions affect their formation," said Koraljka Muzic from the University of Toronto in Canada.

"Our findings suggest, once again, that objects not much bigger than Jupiter could form the same way as stars do. In other words, nature appears to have more than one trick up its sleeve for producing planetary-mass objects," said Ray Jayawardhana from the University of Toronto.

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Mercury Joins Venus at Dusk

November 2011: Mercury lurks just 2° below Venus during November's first 2 weeks. You'll need a clear sky and an unobstructed southwestern horizon to see the more challenging innermost planet.


The two inner planets (Venus at left and Mercury to its right)
passed within a few degrees of each other April 4, 2010.
The pair repeats this performance in November’s evening sky. Rick Stankiewicz

Half an hour after sunset this November, Venus stands out in the southwestern sky. The planet shines at magnitude –3.9 — far brighter than any other point of light in the sky. It becomes even more obvious with each passing minute as the bright blue sky turns a deeper and darker azure.

Mercury lurks just 2° below Venus during November’s first 2 weeks. You’ll need a clear sky and an unobstructed southwestern horizon to see the more challenging innermost planet. Glowing at magnitude –0.3 throughout this period, Mercury appears just 4 percent as bright as its neighbor. The pair sets about an hour after the Sun.

These two planets maintain their relative positions because both move eastward against the background stars at about the same rate. You can track their nightly progression using the 1st-magnitude star Antares as a guide. The star seems to approach the pair from the left before sliding beneath both November 9. That evening, Mercury passes 2° north of Antares and Venus lies 2° farther north. You’ll likely need binoculars to pull Antares out of the twilight glow.

Mercury reaches its greatest eastern elongation November 14. The planet then reverses direction and heads back toward the Sun while Venus continues to move away. Mercury dims and sinks deeper into the twilight, disappearing from view before the month ends.

Venus, on the other hand, grows more prominent in November’s second half as it climbs higher. A nice photo opportunity occurs November 26 when a waxing crescent Moon passes 3° from Venus. That same evening, the planet sits less than a degree southwest of the Lagoon Nebula (M8) in Sagittarius. Astro­imagers will have no trouble capturing the Moon and planet together; recording the fainter nebula against the deep twilight presents a formidable challenge. Venus ends the month 1° northwest of 3rd-magnitude Lambda (λ) Sagittarii, the star that marks the tip of the constellation’s Teapot asterism, and sets nearly 2 hours after the Sun.


These two planets maintain their relative positions because both move eastward against the background stars at about the same rate. You can track their nightly progression using the 1st-magnitude star Antares as a guide. The star seems to approach the pair from the left before sliding beneath both November 9. That evening, Mercury passes 2° north of Antares and Venus lies 2° farther north. You’ll likely need binoculars to pull Antares out of the twilight glow.

Mercury reaches its greatest eastern elongation November 14. The planet then reverses direction and heads back toward the Sun while Venus continues to move away. Mercury dims and sinks deeper into the twilight, disappearing from view before the month ends.

Venus, on the other hand, grows more prominent in November’s second half as it climbs higher. A nice photo opportunity occurs November 26 when a waxing crescent Moon passes 3° from Venus. That same evening, the planet sits less than a degree southwest of the Lagoon Nebula (M8) in Sagittarius. Astro­imagers will have no trouble capturing the Moon and planet together; recording the fainter nebula against the deep twilight presents a formidable challenge. Venus ends the month 1° northwest of 3rd-magnitude Lambda (λ) Sagittarii, the star that marks the tip of the constellation’s Teapot asterism, and sets nearly 2 hours after the Sun.

Mercury and Venus lie no more than 2° apart
during this month’s first half. First-magnitude Antares
joins the pair November 9 and 10. Astronomy: Roen Kelly
It’s worth spending a few minutes each night viewing Mercury and Venus through a telescope. The innermost planet orbits the Sun faster, which translates into a more rapid transformation. On November 1, Mercury appears 5.4" across and 84 percent lit. By the 15th, the disk spans 6.7" and is 62 percent illuminated. Venus exhibits more subtle changes. During the course of November, its apparent diameter grows from 10.6" to 11.5" while its phase dwindles from 94 percent to 89 percent lit.

If you look about halfway up in the southern sky after darkness falls, you’ll find the sprawling constellation Aquarius. And tucked into a corner of the Water-bearer, near its border with eastern Capricornus, lies the distant planet Neptune. This ice-giant world remains 1.7° northwest of 4th-magnitude Iota (ι) Aquarii throughout November.

Neptune glows at mag­nitude 7.9, which makes it bright enough to see through firmly held 50mm binoculars. (For a steadier view, try mounting them on a tripod.) If you turn a telescope on this distant world, you’ll see a blue-gray disk that measures 2.3" across.

Some 30° east and a bit north of Neptune lies its solar system sibling, Uranus. The easiest way to find Uranus is to start with autumn’s most distinctive asterism: the Great Square of Pegasus. This group lies due south and more than two-thirds of the way to the zenith at 8 p.m. local time in mid-November. From the Square’s center, drop about 20° south to a circular group of a half-dozen stars in Pisces known as the Circlet asterism. Uranus lies about one binoc­ular field southeast of the ­Circlet’s center.

Glowing at magnitude 5.8, Uranus is easy to pick up through binoculars. You can even glimpse it with naked eyes under a dark sky, although it helps if you first locate it with binocs. Don’t confuse this world with a slightly fainter (magnitude 6.3) star that stays within 0.5° of it all month. You can confirm Uranus’ identity by targeting it through a telescope at medium magnifi­cation. The planet shows a 3.6"-diameter disk with a noticeable blue-green color.



Ganymede's black shadow stands out against Jupiter's clouds
November 14/15, just after the moon clears
the planet's western limb. Astronomy: Roen Kelly
Spotting Uranus and Neptune requires a little bit of time and effort. Jupiter makes no such demands. Head outside on any clear November night and you can’t miss the brilliant planet. It shines at magnitude –2.9 (only the Moon and Venus glow brighter) and lies in a sparsely populated region near the border between Aries and Pisces.
Jupiter reached opposition and peak visibility in late October, but it declines so slowly that the views this month are nearly as good. The most significant change in the planet’s appearance is a positive one — it rises earlier and thus appears higher in the evening sky.

The image of Jupiter through a telescope never ceases to impress. The gas-giant world’s apparent equatorial diameter shrinks slightly in November, from 50" to 48", although that’s still plenty big enough to reveal many details. The most obvious features are two relatively dark equatorial belts, which reside above and below a brighter equatorial zone that bisects the planet’s disk. A series of alternating dark belts and bright zones shows up on nights when Earth’s atmos­phere steadies and telescopic views sharpen.

Features within Jupiter’s cloud belts, including festoons, barges, ovals, and the Great Red Spot, show up with longer looks. Spending time at the eyepiece trains your eye to see finer details on display in the jovian atmosphere. Careful observers can see features change position within 10 to 15 minutes as Jupiter’s rapid spin carries them across the planet’s disk.

The presence of up to four bright moons significantly enhances Jupiter’s appearance. Io, Europa, Ganymede, and Callisto shine bright enough to see through any telescope as long as they aren’t passing in front of or behind the planet. (They would appear to naked eyes if the brilliant planet didn’t overwhelm them.)

Conspicuous Saturn returns to view in November's morning sky,
where it forms half of a colorful pair with Virgo's brightest star,
Spica. Astronomy Roen Kelly
The most exciting observation is to watch a moon and its inky-black shadow cross Jupiter’s bright cloud tops. You can witness a good ­example with Ganymede 
the evening of November 14. At 7:13 p.m. EST, this moon first touches Jupiter’s southeastern limb. It then tracks across the planet’s southern hemisphere for more than 
90 minutes, exiting the disk at 8:46 p.m. EST. Just 4 minutes later, Ganymede’s shadow starts a similar trek. The dark spot marches across the jovian clouds from 8:50 p.m. to 10:45 p.m. EST.

You’ll have to wait until morning for another prominent planet to appear. Mars pokes above the eastern horizon around midnight local time and grows more conspicuous as it climbs higher in the predawn sky. It lies among the background stars of southern Leo, passing 1.4° north of the Lion’s brightest star, Regulus, the morning of the 10th. The planet then shines at magnitude 1.0, which is 0.3 magnitude brighter than the star. Note the color contrast between ruddy Mars and blue-white Regulus.

Mars grows larger during November, swelling from 5.9" to 7.0" in apparent diameter. Observers with 8-inch or larger telescopes should see the white north polar cap along with more-subtle surface features during moments of good seeing.

Saturn returns to view following its mid-October solar conjunction, climbing quickly into a dark sky before dawn. By November 30, it stands 20° high in the southeast as twilight commences. Like Mars, Saturn has stellar company — in the ringed planet’s case, it’s Virgo’s luminary, Spica. The two remain within 5° of each other all month. Golden-colored Saturn shines at magnitude 0.8, slightly brighter than the blue-white star.

A telescope transforms Saturn from a point of light into a showpiece. The planet itself measures 16" across the equator while the ring system spans 36". By late November, the rings tip 14° to our line of sight, their largest tilt in more than 4 years. The wide angle affords earthbound observers magnificent views.

A partial solar eclipse occurs deep in the Southern Hemisphere November 25. Observers will see the Moon cover a tiny sliver of the Sun from South Africa (in the morning) and Tasmania (late afternoon). Those on New Zealand’s South Island will witness nearly 30 percent of the Sun disappear as our star sets. All of Antarctica sits under the Moon’s shadow; visitors to the South Pole can view the Sun diminished by nearly 80 percent. To avoid damaging your eyesight, be sure to view the eclipse through a safe solar filter.

Will the Lion sleep or roar? 
The Leonid meteor shower peaks the night of November 17/18,
although its shooting stars will have to battle a nearby
Last Quarter Moon after midnight. Astronomy: Roen Kelly
The Leonid meteor shower always brightens November’s sky. In some years, it does so only a little; in others, it brings a veritable storm of “shooting stars.” The occasionally wild swings from year to year depend on how Earth encounters the various debris streams laid down by the shower’s parent comet, 55P/Tempel-Tuttle.

Although astronomers caution that there’s no certainty with the Leonids, they don’t expect a spectacular show in 2011. The shower should peak before dawn November 18, when a Last Quarter Moon lies near the shower’s radiant in Leo the Lion. Observers with an otherwise dark sky can expect to observe up to 10 meteors per hour. To see the most, head out to the country and face away from the Moon’s glare.

Don't be afraid of the darkness 
Shortly after First Quarter phase, the large craters
Archimedes and Plato catch their first rays of sunlight.
This northern hemisphere region abounds
with smaller craters and mountain peaks.
Consolidated Lunar Atlas/UA/LPL
The first week of November features a waxing Moon that dominates the evening sky. Grab your telescope any clear night and scan along the terminator — the line dividing light and dark on the surface. In this region, the rugged lunar landscape casts long shadows.

First Quarter phase arrives November 2, when half our celestial neighbor appears lit. The next evening, observers start to glimpse the Moon’s western hemisphere. Look along the terminator halfway between the equator and the north pole, and you’ll see the perfectly circular crater Archimedes. The ragged rim of this 52-mile-wide impact structure projects spiky shadows onto its smooth lava-filled floor, and even longer spikes into the darkness to the west.

Two smaller craters lie east of Archimedes. Aristillus spans 34 miles and appears more impressive thanks to a distinctive group of three central peaks. The high rim and smaller size (24 miles across) of Autolycus keeps its floor in nearly complete shadow November 3.

North of these three craters, the solitary peak of Mons Piton sprouts above the wrinkled lava plains of Mare Imbrium. The large elliptical crater Plato lies northwest of Mons Piton. This crater’s rim appears as a broken outline in the early evening of the 3rd but fills in to become a complete ring in the next few hours.

Garradd offers a month of déjà vu 
Comet C/2009 P1 (Garradd) crawls to the north
and west this month against the stellar
backdrop of southern Hercules. Astronomy: Roen Kelly
Comet lovers can hardly believe their good fortune. Eight months ago, the brightest comets glowed at 13th magnitude and barely showed up through moderate-aperture telescopes under dark skies. But in November, observers have two comets to choose from, and both should be visible through binoculars or small scopes.

Leading the parade is 7th-magnitude Comet C/2009 P1 (Garradd). This first-time visitor to the inner solar system offers a distinct advantage to new observers — unlike most comets, Garradd hardly moves relative to the background stars. This means you can find it in essentially the same spot night after night. It resides against the backdrop of southern Hercules, a few degrees northeast of Alpha (α) Herculis. This region lies about one-third of the way from the western horizon to the zenith at the end of evening twilight.

The geometry of this encounter means that Garradd’s tail fans out to the northeast (almost straight up in the evening sky). Although the tail fades gradually, the comet’s head appears well-defined on its southwestern side. This is where material released from the icy nucleus interacts with the solar wind. Boost your telescope’s power past 100x, and you’ll see a bright spot near the head’s center. This is the inner coma; the nucleus remains hidden inside this cocoon of dust.

Our second comet is C/2010 X1 (Elenin). Astronomers expect it to glow around 8th magnitude in early November and dim to 12th magnitude by month’s end. Search for it before morning twilight during November’s first week, when it lies in southern Auriga and appears high in the west with the Moon out of the sky. It won’t be as easy to spot as Garradd because it is crossing the Milky Way.

California, here comes Eunomia 
The constellation Perseus climbs high in the eastern sky on November evenings. Sliding in front of the gas and dust clouds at the Hero’s feet is asteroid 15 Eunomia. This minor planet swings close enough to Earth this month that it shines brighter than all others except 4 Vesta.
Eunomia reaches its peak in late November,
when it glows at 8th magnitude while passing
in front of the California Nebula (NGC 1499)
in southern Perseus. Astronomy: Roen Kelly
Eunomia begins November glowing at magnitude 8.3 and brightens to magnitude 7.9 by the month’s final week. It reaches opposition and peak visibility on the 28th, when it passes nearly overhead around midnight local time.

But that’s not the main reason to view Eunomia around opposition. During the month’s final days, it passes in front of the California Nebula (NGC 1499), which lies just north and east of 4th-magnitude Xi (ξ) Persei. Although this emission nebula appears prominent in photographs, it’s tough to see visually through a telescope. You’ll need a dark sky, and a nebula filter (Hydrogen-beta is best) definitely helps.

In contrast, Eunomia stands out from the field. Only a few stars in its immediate vicinity shine as bright as the asteroid. You can confirm which object is Eunomia by sketching the field and then returning a night or two later to see which dot of light moved.

Martin Ratcliffe provides professional planetarium development for Sky-Skan, Inc. Alister Ling is a meterologist for Environment Canada.

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