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News for Norther Colorado and the world

Thursday, September 3, 2015

‘Earth & Sky’ Archives

EarthSky Tonight—Sept 18, Best predawn of view

EarthSky Tonight—Sept 18, Best predawn of view Mercury

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Comet Hartley 2 might brighten to binocular object by late September 2010 Our sky chart shows the eastern sky for about one hour before sunrise at our mid-northern latitudes. If it is clear, there is a good chance that you will spot Mercury – the solar system’s innermost planet – sneaking onto the stage of sky. However, to catch this elusive world, you will need a level, unobstructed horizon in the direction of ... Full Story

EarthSky Tonight—September 17, Close-up on

EarthSky Tonight—September 17,  Close-up on constellation Perseus the Hero and Demon Star

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Will you be able to see the ‘demon’ star in the constellation Perseus the Hero tonight? Yesterday’s chart showed you how to use the constellation Cassiopeia to locate Perseus in the northeast at mid to late evening. The brightest star in Perseus is Alpha Persei, whose proper name is Mirfak, pronounced MEER-fak. Comet Hartley 2 passes in front of Cassiopeia, Perseus in autumn 2010 Meanwhile, the best-known star in this ... Full Story

EarthSky Tonight—Sept 16, Cassiopeia and Perseus in

EarthSky Tonight—Sept 16, Cassiopeia and Perseus in northeast on September evenings

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org At this time of year, if you are in the northern hemisphere, try looking northeast at mid to late evening for two prominent constellations, Cassiopeia and Perseus. Learn these constellations now, and you may be able catch Comet Hartley 2 in front of Cassiopeia in late September and the first week in October. Then watch as the comet passes through Perseus until October 17. Comet Hartley 2 might brighten to binocular object by late ... Full Story

EarthSky Tonight—September 15, Moon helps you

EarthSky Tonight—September 15, Moon helps you visualize Pluto spacecraft

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org A spacecraft is now in route to the dwarf planet Pluto, scheduled to arrive in the year 2015. Tonight’s moon can help you visualize this Pluto spacecraft’s whereabouts on our sky’s dome. We are talking about the New Horizons spacecraft, launched from Earth in 2006. Will you see the spacecraft itself tonight? No. Even with a high-powered telescope, this little craft cannot be seen from Earth now as it speeds toward the outer ... Full Story

EarthSky Tonight—September 14, Moon in forgotten

EarthSky Tonight—September 14, Moon in forgotten constellation of Zodiac

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org This evening, the moon shines above the constellation Scorpius and in front of Ophiuchus – the “overlooked” constellation of the Zodiac. Once upon a time, the border between Scorpius and Ophiuchus was not a particularly well-defined section of sky, until the International Astronomers Union officially drew in the constellation borders in the 1930’s. Although you will not see Ophiuchus on the horoscope page in the ... Full Story

EarthSky Tonight—September 13, Waxing moon near

EarthSky Tonight—September 13, Waxing moon near Scorpion’s Heart

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Here is a familiar figure – to stargazers – and to Texans like me. Just yesterday, my little neighbor – age 5 – told me she saw a scorpion. To those of us who watch the skies, the chance to see a celestial Scorpion is present mostly in the summer months. Here it is – Scorpius the Scorpion – only visible at nightfall and very early evening now that summer has faded away. Bright star in east? Might be planet Jupiter, ... Full Story

EarthSky Tonight—September 12, Moon, Venus and a

EarthSky Tonight—September 12,  Moon, Venus and a double star

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Our chart shows the moon, the planet Venus and the star Zubenelgenubi as they appear about one hour after sunset. The sky scene, though specifically for mid-northern latitudes in North America, will look similar at mid-northern latitudes all around the world. However, European and Asian observers will see the moon somewhat closer to Zubenelgenubi, the constellation Libra’s rather faint yet visible star. Bright star in east? ... Full Story

EarthSky Tonight—September 11, Moon and Venus low

EarthSky Tonight—September 11,  Moon and Venus low in west at dusk

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org The waxing crescent moon and the dazzling planet Venus are the first two celestial lights to appear after sunset this evening. Look low in the west to see the shining pair at dusk and early evening. After the sun, the moon and Venus rank as the second and third brightest heavenly bodies, respectively. When these brilliant sky objects get together, people across Earth’s entire globe spot them and gaze with wonder. Since the moon ... Full Story

EarthSky Tonight—September 10, Moon waxes as Venus

EarthSky Tonight—September 10,  Moon waxes as Venus wanes in September evening sky

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org The waxing crescent moon and the blazing planet Venus shine low in the west at dusk. Our chart shows the sky scene for about 45 minutes after sundown, with the moon barely above the horizon. If you miss the moon with Venus this evening, try again tomorrow. On Saturday, the lunar crescent will appear higher in the sky and will set later after sunset. Whenever the moon appears in the west at dusk and early evening, it is always a ... Full Story

EarthSky Tonight—September 9, Cassiopeia the Queen

EarthSky Tonight—September 9,  Cassiopeia the Queen in northeast

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Cassiopeia the Queen can be found in the northeast after sunset on September evenings. This constellation has the distinct shape of a W, or M, depending on the time of night you see it. The shape of this constellation makes Cassiopeia’s stars very noticeable. Cassiopeia represents an ancient Queen of Ethiopia. The entire constellation is also sometimes called Cassiopeia’s Chair, and some old star maps depict the Queen ... Full Story

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