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News for Norther Colorado and the world

Tuesday, May 31, 2016

Posts Tagged ‘Sirius’

EarthSky Tonight—December 6, Winter Circle up by

EarthSky Tonight—December 6, Winter Circle up by late evening

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org You will have to stay up until 9 or 10 p.m. tonight to see the exceptionally brilliant and huge Winter Circle filling up the eastern portion of sky. This famous sky pattern is not a constellation. It is an asterism: a noticeable pattern on the sky’s dome. In this case, the pattern is made of the brightest stars of winter, in many different constellations. From a dark sky, you will see the Milky Way’s hazy band ... Full Story

EarthSky Tonight—Nov 26, Can you see the different

EarthSky Tonight—Nov 26, Can you see the different colors of the stars?

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org The stars are like wildflowers, in that each star radiates with a different color of the rainbow. Have you ever noticed star colors? Let’s explore some of the stars that you will see in the meadow of night tonight. In the northeastern sky at evening shines a bright star called Capella, the Little She Goat, in the constellation Auriga. Like brighter Sirius, which does not rise until several hours later in the ... Full Story

EarthSky Tonight—October 15, See the sky’s

EarthSky Tonight—October 15,  See the sky’s brightest star, Sirius, before dawn

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Andy wrote, "Early this morning, looking southeast, I saw a beautiful star, bright and multicolored. . .Can you identify it for me?" Paula wrote, "This morning two of us got up early. We found a pulsing star straight down the sky below Orion’s Belt. It was pulsing the colors of green, yellow, blue and red like a strobe light. I will search for it every morning as it was so enchanting.” It is enchanting, so much so that – ... Full Story

EarthSky Tonight—October 12, Arcturus sparkles in

EarthSky Tonight—October 12,  Arcturus sparkles in western sky on October evenings

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Is Comet Hartley 2 beginning to brighten? A bright star in the west in the evening in October – flashing colors – is Arcturus. Let us back up a minute. The extremely bright object in the east to southeast sky on these October 2010 evenings is the planet Jupiter. Still, many have asked about a bright star – not as bright as Jupiter, but still very bright and twinkling very actively – in the west after sunset. Jim wrote, ... Full Story

EarthSky Tonight—September 6, Star-hop to Sirius

EarthSky Tonight—September 6, Star-hop to Sirius from Orion’s Belt

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Sure, we have said it before, but we will say it again, because it is one of the neatest tricks in all the heavens. That is … Orion’s Belt points to Sirius. Sirius is the brightest star in the sky. It is up before dawn now, but will be shifting into the evening sky as the months pass. You can find Orion. Trust me. If you go outside and look southward before dawn now, you will notice Orion’s Belt, which consists of a short, ... Full Story

EarthSky Tonight—August 25, Orion the Hunter and

EarthSky Tonight—August 25, Orion the Hunter and Sirius the Dog Star

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org The very noticeable constellation Orion the Hunter can be seen ascending in the southeast before dawn at this time of year. Orion will be visible in the evening by winter, but right now the Hunter lords over the southeastern sky at dawn’s first light. Orion was low in the west after sunset last spring, and, in early summer, this constellation was behind the sun as seen from Earth. Orion only returned to visibility in Earth’s ... Full Story

Earthsky Tonight —May 3, Can you see Aldebaran near

Earthsky Tonight —May 3, Can you see Aldebaran near Venus?

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org You should have no trouble spotting Venus after sunset, even though this dazzling world appears quite low in the west at dusk and early evening. Don't tarry when looking for Venus, for this blazing beauty follows the sun beneath the horizon roughly two hours after sunset. Venus and Aldebaran, the brightest star in the constellation Taurus, are in conjunction today. Generally, two heavenly bodies do not appear in the same exact ... Full Story

Earthsky Tonight — April 30, Star hopping from

Earthsky Tonight — April 30, Star hopping from constellation Orion

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Rebecca wrote, “What is ’star hopping?’ What does that mean?” Rebecca, amateur astronomers use star hopping to go from stars and constellations they know … to ones they don’t know yet. First, look for noticeable patterns on the sky’s dome. One very easy pattern to find at this time of year is the constellation Orion the Hunter. You will find it descending in the west after sunset. Orion is easy to find because it ... Full Story

Earthsky Tonight—March 10: Is Sirius the most

Earthsky Tonight—March 10: Is Sirius the most luminous star in the sky?

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Look south at nightfall and early evening, and you can’t miss Sirius, the brightest star in the nighttime sky. Mia asks, “Isn’t there a brighter star in absolute magnitude which appears dimmer because of its distance?” Yes, Mia, you are right. Sirius looks extraordinarily bright in Earth’s sky because it is only 8.6 light-years away. Many stars on the sky’s dome are intrinsically more luminous than Sirius, but ... Full Story

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