How to see Jupiter shine near the moon Sunday - WRCBtv.com | Chattanooga News, Weather & Sports

How to see Jupiter shine near the moon Sunday

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NEW YORK (NBC) -- If the weather is clear on Sunday night, you can catch a potentially amazing sight: the planet Jupiter snuggling close to a thin crescent moon.

The celestial encounter will be visible in the western sky around mid-twilight, about an hour after sunset. At that time, the moon will be shining about one-third of the way up from the western horizon. It should be an eye-catching sight, with a slender sliver of a crescent moon shining right next to a bright star-like object — the bright planet Jupiter. 

Jupiter will appear to be about 3 degrees from the crescent moon. To understand how far apart they will appear in the sky, recall that your clenched fist held out at arm's length will measure 10 of those degrees. So you can use your fist to make a reasonable estimate of degrees either horizontally or vertically.

In this case, Jupiter and the moon will appear rather close together; just one third of a fist apart. And partly because they will be the two brightest objects in the sky and partly because of their relatively close proximity to each other, both the moon and Jupiter will likely attract the attention of even those who aren't consciously looking up at the sky. [Amazing April Night Sky Photos by Stargazers]

As the evening progresses, Jupiter and the moon will appear to descend down the sky, finally disappearing beyond the west-northwest horizon soon after 11:30 p.m. your local time.

Jupiter is still the brightest starlike object in the evening and the first to come out each night at dusk. It outshines the brightest true stars. In fact, it even rivals the brightest of all the stars, Sirius, which in early evening sparkles low in the southwest sky. When you are observing Jupiter, note how the planet shines with serene steadiness while Sirius, twinkles vigorously, as if struggling to match Jupiter's glory.

During April, Jupiter will slowly slip farther down into the glow of evening twilight in the west-northwest. And in about another month Jupiter will be setting right around the time evening twilight ends.  

This month, Jupiter is falling far behind Earth in the never-ending planetary race around the sun and it continues to move slowly eastward among the stars. Currently it can be found between the horns of the constellation Taurus the Bull. 

Because Jupiter takes nearly 12 years to orbit the sun, it spends about a year in each of the 12 zodiacal constellations. Jupiter moved into Taurus in mid-May of 2012 and will exit Taurus and move into Gemini the Twins late in June.

 

Joe Rao serves as an instructor and guest lecturer at New York's Hayden Planetarium. He writes about astronomy for The New York Times and other publications, and he is also an on-camera meteorologist for News 12 Westchester, New York. Follow us @Spacedotcom, Facebookand Google+. Original article on SPACE.com.

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