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News for Norther Colorado and the world

Monday, September 22, 2014

‘Earth & Sky’ Archives

Sky Tonight—January 2, Earth’s closest

Sky Tonight—January 2, Earth’s closest approach to the sun in 2011

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org When 2011 began on January 1, our planet Earth was very close to its perihelion – its closest point to the sun for the year. That closest point will come tomorrow. In 2011, Earth will be closest to the sun on Monday, January 3 at 19 hours Universal Time (12 p.m. Mountain Time). How do I translate Universal Time to my time? Earth is closest to the sun every year in early January, when it is winter ... Full Story

Sky Tonight—January 1, Moon and Mercury below Venus

Sky Tonight—January 1, Moon and Mercury below Venus before dawn tomorrow

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org If you rise shortly before sunup tomorrow (Sunday, January 2), you might catch the waning crescent moon and elusive planet Mercury below brilliant Venus. Look in the direction of the sunrise – but an hour or more before the sun comes up. Looking for a sky almanac? EarthSky recommends You will need a clear view of the sky, because any obstructions such as mountains or trees will hide the moon and ... Full Story

Sky Tonight—December 31, See brightest star at

Sky Tonight—December 31, See brightest star at midnight

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Sirius in the constellation Canis Major – the legendary Dog Star – should be called the New Year’s star. This star – the brightest star in our sky – celebrates 2011 and every new year by reaching its highest point in the sky around the stroke of midnight. How can you find Sirius? It is easy because this star is the brightest one we see from Earth. Its name means ‘Sparkling’ or ... Full Story

Sky Tonight—December 30, Moon and Venus will shine

Sky Tonight—December 30, Moon and Venus will shine before dawn tomorrow

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The final morning of 2010 – tomorrow morning, December 31 – will feature the moon with the planet Venus in the eastern sky before sunrise. It should be quite a treat, because the moon and Venus rank as the second- and third-brightest celestial bodies in Earth’s sky. Depending on where you live worldwide, Venus and the moon will rise above the eastern horizon some 3 to 4 hours before sunup, to light ... Full Story

Sky Tonight—December 29, Moon and Venus before dawn

Sky Tonight—December 29, Moon and Venus before dawn tomorrow

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org If you look in the eastern predawn sky in the coming mornings, you will find the moon and planet Venus close together. They will be a beautiful sight tomorrow morning, shining nearly side by side. Venus is easy. It is the brightest object there other than the sun and moon. However, Mercury –the most elusive planet – is also up before dawn, closer to the horizon. Now here is a challenge. Did you see ... Full Story

Sky Tonight—December 28, Find a variable star in

Sky Tonight—December 28, Find a variable star in Lyra

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org This evening, we zoom in on a variable star – a star whose brightness changes – near the star Vega in the small but distinctive constellation Lyra the Harp. Here is how to locate it. A dark sky brings out the four rather faint stars to the left of Vega. These stars form a parallelogram – a four-sided figure with its opposite sides equally long and parallel to one another. Three fingers at an arm ... Full Story

Sky Tonight—December 27, Moon, bright star, two

Sky Tonight—December 27, Moon, bright star, two planets before dawn

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Before dawn tomorrow (Tuesday, December 28), look in the east for the planet Saturn and star Spica near the last quarter moon. Beneath this threesome – moon, Saturn and Spica – you will see the blazing planet Venus much closer to the eastern predawn horizon. You might be seeing these objects when there is a fair amount of predawn twilight washing the sky. The planets and stars have colors of their ... Full Story

Sky Tonight—December 26, Northern Cross stands

Sky Tonight—December 26, Northern Cross stands upright on winter evenings

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The Northern Cross is not as famous as its counterpart – the Southern Cross – visible from the southern hemisphere. Nevertheless, the Northern Cross also looks like a cross. It is a large, noticeable star pattern. The star Deneb marks the top of the Northern Cross, and the star Albireo marks the bottom. Tonight you can find the Northern Cross low in the north-northwest at mid evening. The Northern ... Full Story

Sky Tonight— December 24, Moon approaching Regulus

Sky Tonight— December 24, Moon approaching Regulus

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Bright object in south on December evenings? It’s the planet Jupiter If you are out late on this Friday evening, look toward the east to see the moon near the star known as the Lion’s Heart. This is Regulus, brightest star in the constellation Leo the Lion. Although our sky chart is designed for mid-temperate North American latitudes, the moon and Regulus can be seen late tonight from all around ... Full Story

Sky Tonight, December 23—Southern Cross visible in

Sky Tonight, December 23—Southern Cross visible in Hawaii before sunrise

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Bright object in south on December evenings? It’s the planet Jupiter A reader asked us, “When can I see the Southern Cross in Hawaii?” At this time of year, Hawaiians can see the Southern Cross, which is also known as the constellation Crux, in the southern sky before dawn. The Southern Cross stands close to upright, but quite low in the sky. Notice the two nearby stars, Rigel Kentaurus and ... Full Story

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