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Recent Astronomy Articles at Cosmic Pursuits

A Northern Observer Discovers the Southern Skies

June 20, 2018 by Joe Bergeron Filed Under: Stargazing

The Southern Cross and the Coalsack. Image credit: Joe Bergeron.

Imagine a young stargazer living at a latitude of 42 degrees north.

Polaris, the fabled North Star, shines far above the northern horizon. Around it wheel the circumpolar constellations of Ursa Major, Cassiopeia, Draco, and Cepheus, ancient landmarks of the northern sky.

In the south, the tail of Scorpius brushes low along the horizon for a few brief months of Summer. Those stars are among the most southerly he can see. But from his star maps, the young stargazer knows that farther south lie some of the greatest wonders of the entire celestial sphere, all the way down to the obscure South Celestial Pole. Yet the poor lad can never see them. The obstinate bulk of the spherical Earth hides them forever [Read more…] about A Northern Observer Discovers the Southern Skies

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Filed Under: Stargazing deep sky, sky tour, southern cross, southern sky

Seeing Saturn in 2018

June 13, 2018 by Brian Ventrudo Filed Under: Solar System

saturnMany casual observers get hooked on amateur astronomy after a first look at Saturn through a telescope.  More than a few have looked through my small refractor on a night of good seeing and asked of Saturn, “Is it real?” Yes, it is real.  And it’s one of the most beautiful things you will ever see. The color of Saturn, the proportions, the apparent 3D perspective of this grand icy world make it arguably the finest sight accessible with a small telescope. The planet reaches opposition on June 27, 2018 and will remain bright and large in a telescope over the next few months. Here’s how to find it and see it in a small telescope.

[Read more…] about Seeing Saturn in 2018

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Filed Under: Solar System planet, saturn, solar system, titan

Moving Stars

May 21, 2018 by Brian Ventrudo Filed Under: Science

Like the drift of the continents or the erosion of great mountain ranges on Earth, the motion of the stars across the sky is almost imperceptibly small over the paltry span of a human lifetime. But in this quite astonishing video made with data from the European Space Agency’s (ESA’s) Gaia spacecraft, which compresses 5 million years of star motion into a few minutes, you can see more than 2 million stars move across the sky like grains of pollen floating in a breeze. It is mesmerizing (and unexpectedly calming) [Read more…] about Moving Stars

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Filed Under: Science deep sky, milky way, proper motion

The Blue-Green Beauty of Planetary Nebulae

May 16, 2018 by Joe Bergeron Filed Under: Deep Sky

A long-exposure image of the Helix Nebula (NGC 7293) shows far more color than can be observed visually, even through a large telescope. Image credit: Terry Hancock.

New and would-be amateur astronomers are often mystified and disappointed by the lack of color in things they see through their telescopes. And why shouldn’t they be? Popular astronomy shows, magazines, and web sites encourage people to believe that celestial objects are rich with blistering, saturated color, much like the image above. Why doesn’t that new $400 8-inch Dobsonian show bright pink nebulae, and galaxies of blue and gold? [Read more…] about The Blue-Green Beauty of Planetary Nebulae

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Filed Under: Deep Sky carbon stars, planetary nebula

Moon Viewing on the Streets of L.A.

April 13, 2018 by Brian Ventrudo Filed Under: Astronomy Images and Video

A New View of the Moon from Alex Gorosh on Vimeo.

Here’s a short video to brighten your day. The writer and film maker Wylie Overstreet took his big 12″ Newtonian telescope into the streets of Los Angeles to show the Moon to passersby. The result? Well, see for yourself. But it’s nice to know that so many overstimulated city dwellers can still enjoy nature at its finest.

You can see a thousand pictures of the Moon, but it’s never the same experience as seeing it for yourself, especially through a good telescope. Even if you don’t know the name of a single crater or sea, the Moon’s stark beauty, the etched features and long shadows and large range of gray scale and brightness, make it one of the most appealing and accessible sights in the sky. And as more experienced stargazers know, you can get the same experience when seeing much fainter objects. With a little practice, of course.

This fine little production is a great reminder that we should look up more often. And when possible, share what you see with those around you.

 

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Filed Under: Astronomy Images and Video moon, outreach, video

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