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News for Norther Colorado and the world

Tuesday, October 21, 2014

‘Earth & Sky’ Archives

EarthSky Tonight—September 21, Jupiter’s closest

EarthSky Tonight—September 21, Jupiter’s closest opposition since 1963

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Comet Hartley 2 might brighten to binocular object by late September 2010 In 2010, Jupiter came closest to Earth on September 20 – yesterday – at 21 hours Universal Time (4 p.m. Central Daylight Time). Then Jupiter was only 368 million miles away. Today Earth passes between the sun and Jupiter, placing Jupiter opposite the sun in our sky. Astronomers call this event an opposition of Jupiter. The 2010 opposition ... Full Story

EarthSky Tonight—September 20, Fastest sunsets of

EarthSky Tonight—September 20,  Fastest sunsets of the year around equinox time

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Comet Hartley 2 might brighten to binocular object by late September 2010 Does the sun set faster around the time of an equinox? The answer is yes. The fastest sunsets (and sunrises) occur at or near the equinoxes. What’s more, the slowest sunsets (and sunrises) occur at or near the solstices. This is true whether you live in the northern or southern hemisphere. By the way, when we say sunset here, we are talking ... Full Story

EarthSky Tonight—September 19, Venus brightest for

EarthSky Tonight—September 19, Venus brightest for 2010

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Comet Hartley 2 might brighten to binocular object by late September 2010 Venus is the brightest planet and it is brightest this week in the evening for all of 2010. Look outside shortly after sunset and you cannot miss Venus. It is an eerie light low in the southwestern sky. Venus’ brightness will surprise you if you have never noticed it before. It is so bright that, around now, many people will report Venus as a ... Full Story

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 ... 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 ... 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 ... 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 ... 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 ... 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 ... Full Story

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