Recent Astronomy Articles at Cosmic Pursuits

The Sky This Month – June 2017

June 1, 2017 by Brian Ventrudo Filed Under: Celestial Events

1 June 2017. First Quarter Moon, 12:42 UT

3 June. A waxing gibbous Moon lies about 2º from the planet Jupiter. For most of June, the big planet lies a fist’s width to the west of the bright star Spica in the constellation Virgo. It’s two months past opposition, so the planet is growing smaller and fainter, yet at magnitude -2.3 to -2.o it still far outshines any star. The planet has been retrograding, which means it’s moving westward each night against the stars. On June 9, it resumes eastward motion once again and moves closer to Spica for the next couple of months. [Read more…] about The Sky This Month – June 2017

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The Sombrero Galaxy

May 26, 2017 by Brian Ventrudo Filed Under: Deep Sky

Striking in photographs and picturesque in a telescope, the Sombrero galaxy offers a fine, if unusual, example of an edge-on spiral galaxy. This is a lovely object, with a huge and brilliant central galactic bulge likely caused by the machinations of a massive black hole, and an inky-dark dust lane that resembles the brim of the traditional Mexican hat that lends its name to this distant island universe [Read more…] about The Sombrero Galaxy

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The Sky This Month – May 2017

May 2, 2017 by Brian Ventrudo Filed Under: Celestial Events

A superb image few Eta Aquarid meteors, some random meteors, and a bright Iridium flare taken on May 5, 2013 by David Kingham. This image was captured over three nights with two cameras!

2 May. Look for Venus in the eastern sky about an hour before sunrise. The planet in early May is preposterously bright, shining at about magnitude -4.7, enough to cast a shadow in very dark conditions. At the beginning of the month, in a telescope, you see about 1/4 of the planet’s face lit by the Sun. By the end of the month, you see the planet half lit as it dims slightly to magnitude -4.5. A truly beautiful ‘Morning Star’.

3 May. First-Quarter Moon, 02:47 UT [Read more…] about The Sky This Month – May 2017

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Star Tour – Cor Caroli and “La Superba”

April 14, 2017 by Brian Ventrudo Filed Under: Deep Sky

An artist's rendering of the carbon star La Superba in the constellation Canes Venatici. Credit: Wikipedia Commons. — An artist’s rendering of the carbon star La Superba in the constellation Canes Venatici. Credit: Wikipedia Commons.

Turn your gaze to the sky under the handle of the Big Dipper and you’ll see only two reasonably bright stars. These are the 3rd-magnitude stars Cor Caroli and 4th-magnitude Chara. Cor Caroli (the “Heart of Charles”) was named by Edmund Halley after the martyred English King Charles I. It is a pretty double star, easily split in a small telescope even at 30-40x. The blue-white primary shines at magnitude 2.9; the fainter yellow companion is magnitude 5.6 some 19 arc-seconds away from the primary. The pair is about 110 light years away [Read more…] about Star Tour – Cor Caroli and “La Superba”

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The Beehive Cluster

April 7, 2017 by Brian Ventrudo Filed Under: Deep Sky

The Beehive Star Cluster (Messier 44) in the constellation Cancer. Credit: Marc Van Norden - Flickr) — The Beehive Star Cluster (Messier 44) in the constellation Cancer. Credit: Marc Van Norden – Flickr/CC License)

The constellation Cancer is the faintest of the twelve constellations of the zodiac, and many casual stargazers pass it by when looking from bright Gemini to the striking group Leo to the east. In city skies, the constellation is hard to see at all. But there are some excellent sights in Cancer within reach of a telescope, including the superb star cluster M44, the Beehive Cluster, which is one of the finest objects for a wide-field telescope or a pair of binoculars [Read more…] about The Beehive Cluster

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