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News for Norther Colorado and the world

Friday, September 4, 2015

‘Earth & Sky’ Archives

Earthsky Tonight—May 18, Moon near Mars, Castor,

Earthsky Tonight—May 18, Moon near Mars, Castor, Pollux

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org At nightfall, the waxing crescent moon lines up with Castor and Pollux, the two brightest stars in the constellation Gemini the Twins. People often refer to these stars as ‘The Twins’ but they aren’t really twins at all. At a distance of about 34 light-years, Pollux wins acclaim as the closest giant star to our solar system. It’s one of the very few giant stars in our galaxy known to harbor a planet. Castor is farther ... Full Story

Earthsky Tonight—May 16, Crescent moon near Venus

Earthsky Tonight—May 16, Crescent moon near Venus

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org As seen from parts of southeast Asia, the moon passes in front of Venus at about 10 hours Universal Time today. Unfortunately, this is not visible to North American or European observers, but we have not lost out entirely. Tonight, just as it gets dark, look to the western sky and, weather permitting, you should see a beautiful sight — bright Venus with the waxing crescent moon nearby. You should have no trouble finding either ... Full Story

Earthsky Tonight—May 15, Crescent moon near Venus

Earthsky Tonight—May 15, Crescent moon near Venus after sunset

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Sharp-eyed observers with clear skies and a good view of the western sky may catch a thin lunar crescent a few degrees to the lower right of Venus this evening. Best views will be about a half hour to an hour after local sunset. Face the west-northwestern horizon. If the sky is clear and you have an unhampered view, Venus will be un-missable! The thin crescent moon is below and to the right. Because the moon and planets share a ... Full Story

Earthsky Tonight—May 14, 2010 Spot the young moon

Earthsky Tonight—May 14, 2010 Spot the young moon below Venus

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Do you have a clear evening sky – unobstructed by trees, tall buildings, or any sort of haze? Then look near the western horizon, shortly after sunset Friday evening, May 14, for a very young waxing crescent moon. If you cannot see the whisker-thin lunar crescent with your eye at first, try scanning with binoculars along the western horizon, in the darkening twilight. Then, once you spot the moon, set the binoculars aside, and ... Full Story

Earthsky Tonight—May 13, 2010: M13, the Great

Earthsky Tonight—May 13, 2010: M13, the Great Cluster in Hercules

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Hercules above the star Vega. Today’s closer view can help you identify the most famous deep-sky object within this constellation. It is a globular star cluster known as M13. Today’s chart shows the location of M13. It is about a third of the distance along a line between the stars Eta and Zeta Hercules. We are not showing you what the cluster looks like on this chart – and in the sky, you’ll see it differently, ... Full Story

Earthsky Tonight—May, 17, Moon near Venus, Castor

Earthsky Tonight—May, 17, Moon near Venus, Castor and Pollux

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org This evening after dark look in the west to find a lovely waxing crescent moon in front of the constellation Gemini, also known as the Twins. The Gemini Twins – Castor and Pollux – stand upright upon the horizon at early evening. As evening deepens into late night, Gemini slowly but surely sinks beneath the horizon, to disappear from the sky by around 1:00 a.m. tomorrow morning. Can you identify the stars Castor and Pollux ... Full Story

Earthsky Tonight—May 12, 2010 The constellation

Earthsky Tonight—May 12, 2010 The constellation Hercules and The Keystone

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Hercules the Hero is not the easiest constellation to identify. You will need a dark sky to see this mighty star figure. However, if you can see Vega – a prominent blue-white star in the northeast in the evening now – you might spot Hercules nearby. Still can’t see it? Look back at this chart to see Hercules with respect to both Vega and another star, Arcturus. The most noticeable part of Hercules is an “asterism” or ... Full Story

Earthsky Tonight—May 9, By morning, moon moving away

Earthsky Tonight—May 9, By morning, moon moving away from Jupiter

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Here are two bright morning objects again, Jupiter and the moon. If you contrast today’s chart with yesterday’s chart, you will see that the moon appears to the left of Jupiter on Monday morning (May 10), yet above Jupiter on Sunday morning (May 9). How could it be otherwise? The moon is constantly moving in orbit around Earth, and this ceaseless motion translates to an eastward (leftward) motion across our sky from one day to ... Full Story

Earthsky Tonight—May 8: Jupiter and moon close

Earthsky Tonight—May 8: Jupiter and moon close together before dawn

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Tomorrow, on Sunday morning, May 9, the dazzling planet Jupiter sits beneath the waning crescent moon at dawn. Both the moon and Jupiter light up the constellation Pisces the Fishes. One day later, on Monday, the lunar crescent and Jupiter line up side by side, for another spectacular display at morning dawn. Jupiter has more known moons than any other solar system planet. At the last count, there are 63 moons, though only four of ... Full Story

Earthsky Tonight—May 7, See the legendary green

Earthsky Tonight—May 7, See the legendary green flash

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Our image today was taken by Mike Baird. It is a classic image of a detached green flash, seen at sunset. Used with permission. You can see green flashes with the eye, sometimes, if you are looking toward a very clear horizon. You must be looking just at sunset, at the last moment before the sun disappears below the horizon. In addition, you have to be careful not to look too soon. Wait until just the thinnest rim of the sun ... Full Story

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