AstronomyThe Great Rift is a dark swath in the...

The Great Rift is a dark swath in the Milky Way

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View at EarthSky Community Photos. | Osama Fathi in Egypt created this composite picture from greater than 1,200 images taken throughout 2022’s Perseid meteor bathe. It reveals the Nice Rift or Darkish Rift, a darkish space within the starlit band of the Milky Way. It’s actually clouds of dust the place new stars are forming. Read more about this photo. Thanks, Osama!

The Nice Rift, or Darkish Rift, is a protracted swath of gaseous clouds darkening a stretch of the Milky Way. And sure, it blocks the sunshine from stars behind it. This darkish cloudy strip – the place stars are forming – is seen in a dark sky.

The Nice Rift: The best way to see it

Summertime is the most effective time to search for the Nice Rift. That’s as a result of the Milky Way is outstanding in our night sky. Choose an evening when the moon is out of the best way. Below a dark sky, removed from metropolis lights, the Milky Way is simple to see at the moment of yr. It’s a whitish band stretching throughout the sky. If you wish to see the Darkish Rift, that’s simple, too, so long as you notice you aren’t searching for a brilliant object. You’re trying as a substitute for darkish lanes of dust working the size of the starlit Milky Way band.

Star chart: summer triangle stars labeled and Milky Way, with dark rift, crossing chart.
The Nice Rift and the Milky Way cross via the Summer Triangle and above the Teapot asterism in Sagittarius.

You possibly can see the Milky Way most simply within the night from round June or July via about October. From a Northern Hemisphere location, you’ll see the thickest a part of the Milky Way above the southern horizon. From the Southern Hemisphere, the thickest a part of the Milky Way seems extra overhead. Discover that the Milky Way band appears milky white, thus its title. The skies aren’t actually black like ink between stars within the Milky Way. You’ll know if you see the Darkish Rift. That’s as a result of it appears as if somebody took a marker and coloured elements of the Milky Way darker.

Constellations alongside the Nice Rift

The Darkish Rift begins simply above the constellation Sagittarius the Archer. Observe the Milky Way up till you see a black space within the Milky Way simply earlier than you get to the constellation Cygnus. Cygnus is formed like a cross. Deneb is the brightest star in Cygnus and a part of the well-known Summer Triangle asterism. You possibly can see the Darkish Rift contained in the Summer time Triangle.

Be sure you hold your binoculars useful for any Milky Way viewing session. There are a lot of attention-grabbing star-forming areas, star clusters and tens of millions of stars that may seize your consideration.

Clouds of Milky Way with very distinct dark rift, over mountains.
View at EarthSky Community Photos. | Keith Hanssen in Belgrade, Montana, captured this photograph of the Milky Way on June 1, 2021. He wrote: “The picture is a mix of nonetheless panorama exposures and tracked sky exposures mixed in Photoshop’s Sky Substitute Device. I took the exposures on my deck to start with of June previous to wildfire smoke showing within the skies over Montana. For the previous a number of years I waited till it was too late within the season for Milky Way photos because the wildfire smoke all the time appeared all of a sudden, ruining a transparent picture of the Milky Way from my residence. So I’m very completely happy to have taken the chance earlier within the season this yr.” Thanks, Keith!

The Nice Rift is darkish resulting from dust

Stars are shaped from nice clouds of gasoline and dust in our Milky Way galaxy and different galaxies. Once we search for on the starry band of the Milky Way and see the Darkish Rift, we’re trying into our galaxy’s star-forming areas. Think about the huge variety of new stars that may emerge, in time, from these clouds of dust.

Oval with orange horizontal stripe, dark across middle, and blue regions above and below.
Proven is the interplay between interstellar dust within the Milky Way and the construction of our galaxy’s magnetic subject, as detected by ESA’s Planck satellite over your entire sky. Picture through ESA.

Historical cultures targeted on darkish areas, not mild areas

these work the place when you have a look at the sunshine areas you see one factor, however at nighttime areas you see one thing else?

The Nice Rift is a bit like that. Just a few historical cultures in Central and South America noticed the darkish areas of the Milky Way as constellations. These darkish constellations had a wide range of myths related to them. For instance, one essential darkish constellation was Yacana the Llama. It rises above Cuzco, the traditional metropolis of the Incas, yearly in November.

By the best way, the opposite well-known space of the sky that’s obscured by molecular dust is seen from the Southern Hemisphere. It’s the well-known Coalsack Nebula close to the Southern Cross, also called the constellation Crux. The Coalsack is one other area of star-forming exercise in our evening sky, very like the Darkish Rift.

Backside line: The Nice Rift or Darkish Rift is a darkened swath of the Milky Way the place new stars are forming. It’s greatest seen from a rural location away from mild air pollution.



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