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News for Norther Colorado and the world

Sunday, April 20, 2014

‘Earth & Sky’ Archives

Sky Tonight—May 17, Bright moon near the

Sky Tonight—May 17, Bright moon near the Scorpion’s Heart

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The moon will look plenty full tonight, though it will really be a waning gibbous moon that lights the sky. Watch it rise in the southeast some time after sunset. The moon rides low above the horizon in mid-northern latitudes. If your southeastern horizon is rather cluttered, you might have to wait a few to several hours after sunset for the brilliant orb to clear any obstacles. Looking for a sky almanac? ... Full Story

Sky Tonight—May 16, Will you see a fuller moon

Sky Tonight—May 16, Will you see a fuller moon tonight … or tomorrow?

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Photo from yourdon’s photostream Your calendar probably says that full moon is tomorrow, Tuesday, May 17, 2011. However – depending on where you live and what time you look – you might see a fuller moon tonight. That is true for us in North America. Full moon falls at or shortly before dawn on May 17 for us. So tonight’s moon is slightly more full than the moon tomorrow night – even though ... Full Story

Sky Tonight—May 15, Earth shadow, Belt of Venus in

Sky Tonight—May 15, Earth shadow, Belt of Venus in east after sunset

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Here’s a lovely photo of the Earth’s shadow, which can be seen any clear evening ascending in the eastern sky at exactly the same rate that the sun sets below the western horizon. The shadow is a deep blue-grey – darker than the blue of the twilight sky. The pink band above the shadow is called the Belt of Venus. The shadow of the Earth is big. You might have to turn your head to see the whole ... Full Story

Sky Tonight—May 14, Bright star near moon is Spica

Sky Tonight—May 14, Bright star near moon is Spica

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The waxing gibbous moon glides past the star Spica in the constellation Virgo this evening. It passes relatively close to Spica for a day or two each month that Spica is visible in our night sky. It does the same with other bright stars such as Regulus in the constellation Leo, Antares in the constellation Scorpius and Aldebaran in the constellation Taurus. But have you ever heard of the moon near Polaris ... Full Story

Sky Tonight—May 13, Moon near golden Saturn

Sky Tonight—May 13, Moon near golden Saturn

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org You’ll find the moon in a waxing gibbous phase this evening – more than half lighted but less than full – in the sky from sunset until after midnight. Tonight’s moon will be visible near a bright object in our sky. It is not a star, but a planet – Saturn, planet of the rings. Given clear skies, almost everyone around the world can see the moon and Saturn near each other this evening. Earth ... Full Story

Sky Tonight—May 12, How to see the green flash

Sky Tonight—May 12, How to see the green flash

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The image today is a classic image of a detached green flash, seen at sunset. 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 and you have to be careful not to look too soon. Wait until just the thinnest rim of the sun appears above the horizon. If you look ... Full Story

Sky Tonight—May 11, Moon brushes the belly of Leo

Sky Tonight—May 11, Moon brushes the belly of Leo

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The moon is waxing larger in the evening sky each night. The first quarter phase happened yesterday, and now it is a waxing gibbous moon. Tonight’s moon is near the star Regulus and brushing up against the belly of the constellation Leo the Lion throughout the evening. Regulus is the brightest star in the constellation Leo the Lion. It dots the backward question mark of stars dubbed the Sickle. The ... Full Story

Sky Tonight—May 10, First quarter moon shows a

Sky Tonight—May 10, First quarter moon shows a “flat” edge

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org As the moon lights up the sky this evening, everyone will see the moon fairly close to Regulus, the brightest star in the constellation Leo. The moon is not flat, but tonight’s first quarter moon does appear to have a “flat” edge to it. The apparently flat edge of the moon at the quarter phase is called the “terminator.” No, that is not a reference to a Schwarzenegger sci-fi movie. Instead, it ... Full Story

Sky Tonight—May 6, Mercury at greatest morning

Sky Tonight—May 6, Mercury at greatest morning elongation May 7

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Mercury, the solar system’s innermost planet, reaches its greatest western elongation from the sun on Saturday, May 7. Because Mercury is farthest west of the sun at present, this world now rises into the morning sky before sunrise – but how much before depends on where you live on the globe. The farther north you live, the closer Mercury rises to sunrise. The farther south you live, the greater the ... Full Story

Sky Tonight—May 5, Eta Aquarid meteor shower best

Sky Tonight—May 5, Eta Aquarid meteor shower best before dawn on May 6

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Photo courtesy of tonynetone’s photostream The annual Eta Aquarid meteor shower is expected to produce the most meteors before dawn tomorrow (Friday, May 6). But – because these meteors have a relatively broad maximum – you can look for some Eta Aquarids before dawn on Saturday, too. Planets visible at dawn: Venus and possibly Mercury and Jupiter The Eta Aquarid meteors are strictly for night ... Full Story

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