Two Great Starry Luminaries

Skywatchers this month have an ideal opportunity to see the two brightest of all the stars of the northern heavens at the same time. Not only are they brilliant and unmistakable—but they also display a truly striking color contrast between them sure to surprise anyone who thinks that stars are all just plain white!
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The Solar System’s Famous Threesome

Ask someone to name the best-known planets and invariably Mars, Jupiter and Saturn will be the response. Indeed, the last two are the biggest such bodies in our solar system, while Mars—despite its diminutive size—is perhaps the most famous of all such worlds due to its long association with life elsewhere in the public mind. May evenings offer an opportunity to see all three at once. Continue reading

Total Eclipse of the Moon

Mark your calendar for April 15th and set your alarm clock to get you up just before 2:00 a.m. that morning.  A spectacular lunar eclipse will occur beginning then and be widely visible from all of North America.  (It’s actually the first of two such events this year, the second one happening in October, so you’ll have another chance to experience an eclipse should this one happen to be clouded out!)
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A Disappearing Star!

A spectacular and rare celestial occultation is scheduled to happen on the late night of March 20th for selected readers of this column.  It’s nothing less than the brief disappearance of the well-known first-magnitude star Regulus in Leo, the Lion—and with it, disruption of its well-known “sickle” asterism marking the head of the Lion!

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California of the Skies

Due to its great brilliancy and richness, the great French astronomy popularizer Camille Flammarion was fond of calling the winter constellation Orion the "California of the Sky." Aside from the Big Dipper itself, perhaps no other star grouping in the entire heavens is as well known. And it’s at its glorious best on February evenings.

As the brightest of the 88 constellations in the sky, Orion is unmistakable. Simply going outside on a clear winter’s night and looking up, your gaze is immediately riveted on its display of colorful bright stars. The first thing you’ll notice are its two brightest luminaries, Betelgeuse and Rigel. If you think stars don’t have color, think again! The former is a red giant super sun and glows a distinct deep orange in hue. The latter is a blue giant and sparkles like a brilliant celestial diamond.

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Who Invented the Telescope?

Nothing gets the attention of a stargazer like hearing the word "telescope" mentioned. This wonderful device makes it possible to journey through space and time without ever leaving home. And as several of the astronauts themselves have said, looking through one is the next best thing to actually being out there! But where did it come from?
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Comet ISON’s Dawn Spectacle – Part II

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UPDATE: Comet ISON, a "shining green candle in the solar wind," is no longer with us, NASA declared Monday morning December 3 in a tribute to what many hoped would be "the comet of the century."
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We continue our coverage from last month’s installment of what’s being heralded as the "Comet of the Century." Here’s what you can hopefully expect to see during this month:
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Comet ISON’s Dawn Spectacle – Part I

A bright new comet is on its way to gracing the pre-dawn morning sky toward the end of November and promises to put on quite a show during the first few weeks of December.  Due to the time frame involved—and its potential for becoming the “Comet of the Century” as it’s being widely heralded—we’re devoting the Sky Talk columns both this month and next to its coverage.
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