Astro Bob: Hello moon, farewell Jupiter! – Duluth News Tribune


1-day-old moon

This is a day-old moon from Feb. 19, 2015 low in the western sky shortly after sunset. Notice that the entire outline of the moon is faintly visible. This is caused by sunlight reflecting off the Earth out to the moon and back to our eyes. Also, look at the narrow cusps. They’re broken into segments. The crescent is so thin at its ends that shadows cast by lunar mountains and crater walls reach to the edge of moon’s disk and “cut it up” into small slices.

Contributed / Bob King

In the past two weeks, the moon has pared down from full phase to a sharp-tipped crescent. At the moment it’s very low in the east at dawn. But starting Tuesday, May 27, it tiptoes back into the evening sky as a waxing crescent. I say “tiptoe” because the moon is so low and thin for the first couple nights of its return, most of us don’t even notice it. But it takes only a little effort to spy the spider-web-thin, less-than-day-old moon, one of the sky’s greatest delicacies.

I compare it to seeing the first yellow lady’s slipper on the hiking trail in spring. You stop in your tracks to admire such a bright and special flower. On Tuesday night, May 27 the moon will be just 23 hours old — less than a day past new phase — for observers in the Central Time Zone.

To see this lunar lemon peel you need three things — a clear, unobstructed view to the west, binoculars to make the moon more apparent and good weather. The last is always an issue in the skywatching hobby. Astronomy molds its followers into cockeyed optimists. We become very good at hoping for and imagining clear skies because, well, there’s no other choice. Our secret selves know it’s a 50-50 proposition at best. OK, usually less.

The moon’s age varies by location. For observers in the Eastern Time Zone it will be younger yet, just 22 hours old. In the mountain states it ages to 24 hours, and on the West Coast to 25. The eastern states are an hour ahead of the Midwest. When it’s dark enough in Atlanta to spy the moon in the western sky at dusk, the sun has yet to set in the Midwest. Similarly, Californians must wait an additional 2 hours for sunset, which ages the moon a little bit more.

1 day moon May 27

On the evening of May 27, the 23-hour-old moon will appear low in the northwestern sky starting about a half-hour after sunset. It will stand only about 6 degrees high, equal to three fingers held horizontally at arm’s length. Look for Jupiter to the upper left of the crescent.

Contributed / Stellarium

Since the waxing moon follows the sun, the best time to find it is starting about 30 minutes after sunset low in the northwestern sky. For the Duluth region it will be visible from about 9:20 p.m. to 10 p.m. on May 27. Still, it’s a good idea to keep binoculars handy. Besides enhancing the earthshine, they’ll show the crescent’s coarse texture, caused by shadows cast by lunar peaks and crater walls “biting” into the bright crescent. Earthshine is sunlight reflected from Earth into space that dimly illuminates the moon’s nighttime hemisphere.

Jupiter moons May 27

Have a telescope? You might also get your last look at three of Jupiter’s bright Galilean moons before solar conjunction. This is the view around 9 p.m. Central Time May 27. North is to the upper right.

Contributed / Stellarium

About one outstretched fist to the upper left of the crescent you’ll spot Jupiter. If you can’t see it with your eyes alone, focus on the moon in binoculars, place it below the center of the field of view, and then slowly slide to the left until you spot a bright “star.” That’ll be Jupiter. The gas giant glimmers deep in the twilight glow and will soon be lost to view, leaving Mars as the sole evening planet. It shines a short distance above and to the right of Regulus, Leo’s brightest star.

ISS May 27

On the same night as the moon’s return, look for the International Space Station from 9:30 p.m. to 9:34 p.m., when it crosses the southern sky over the Duluth region.

Contributed / Courtesy of Chris Peat, Heavens Above

On June 24 Jupiter will be in conjunction with the sun and completely invisible until it pops back into view at dawn in mid-July. On August 12, the same time as the Perseid meteor shower is active, Venus and Jupiter will squeeze close together in their best and brightest conjunction of the year. I’m already excited about it and — no surprise — optimistic for clear skies.

“Astro” Bob King is a freelance writer and retired photographer for the Duluth News Tribune. You can reach him at nightsky55@gmail.com.





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After Israel took out at least two of Iran’s top scientists behind the development of nuclear weapons (and promised to kill more), my high school fight song came to mind. At football games after a touchdown we sang, “Hit ’em hard and hit ’em again. Show ’em now that we’re gonna win…”

That is precisely what Israel has done in several strikes against its mortal enemy that has threatened to exterminate the Jewish state, reneged on past agreements to curtail its enrichment of uranium and made statements about its religious motivation for attacks on Israel and support of various terrorist proxies. Why shouldn’t Israel be expected to defend itself against the stated aims of the Islamic fanatics in Tehran? If your neighbor threatened to kill you would you not take steps to keep that from happening?

The diplomatic “rope-a-dope” strategy used by Iran to string out negotiations in order to continue pursuing uranium enrichment with a nuclear weapon – its likely outcome – has worked over several U.S. administrations. It is similar to a strategy Japan used at the start of World War II where Japanese negotiators were at the White House the day Pearl Harbor was attacked. You can’t negotiate with evil, or evil wins.

Cal Thomas commentary

Cal Thomas Commentary

Tribune graphic

Mossad, perhaps the greatest intelligence agency in the world (our CIA might take lessons), managed to penetrate deep into Iran with a drone base and other weapons which took out many, but not all, of Iran’s missile launchers. Some missiles got through and hit parts of Tel Aviv, wounding scores and killing some civilians.

President Trump has declared that if Iran doesn’t return to negotiations, it will suffer far worse attacks. That should not be the goal, because there is no evidence that Iran would behave any differently if previously failed negotiations resume.

The goal should be regime change. The current Iranian regime came to power in 1979, thanks to Jimmy Carter undermining the shah, who kept the fanatics now running and ruining the country at bay. The shah had his problems, but was pro-West. Since then, the Islamic regime has sustained itself with guns, crooked elections, by suppressing protests and jailing or killing those opposed to the ayatollahs. The Middle East – indeed the world – would be better off and a safer place if the regime were to fall. The important question is who would take their place? It can’t be a repeat of 1979 with different faces but the same objectives.

There is political opposition in Iran and we occasionally hear voices that claim support for human rights, free elections and other things appealing to Western ears. There have been street protests, which the Revolutionary Guard quickly extinguished. While additional military attacks could set back Iran’s nuclear weapons program even further, force alone is unlikely to topple the government and replace it with people who will live at peace with Israel.

In a televised address after the bombing began, Israeli Prime Minister Benjamin Netanyahu urged Iranians to effectively overthrow their government: “Israel’s fight is not against the Iranian people. Our fight is against the murderous Islamic regime that oppresses and impoverishes you. The time has come for the Iranian people to unite around its flag and its historic legacy, by standing up for your freedom from the evil and oppressive regime. This is your opportunity to stand up and let your voices be heard.”

That would be the ideal outcome, but fear keeps many people from acting on their beliefs and goals. Overcoming fear takes courage and a willingness to sacrifice even your own life. Are there enough Iranians prepared to stand against the power and weapons of the ayatollahs?

This Cal Thomas commentary is his opinion. He can be reached at cthomas@wctrib.com.

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