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A comet that is hurtling towards Earth, prompting hopes for a blazing flyby, appears to have disintegrated, according to astronomers tracking it.
Comet Atlas had been forecast to become "really, really stunning" within weeks, as it got closer to Earth.
Astronomers expected that it could be seen moving among the stars before reaching its closest point to us, in May.
They spoke hopefully of spotting its greenish hue as it blazed through the solar system, though noted that much was still mysterious about the object, which was first spotted in May.
Now, however, the object appears to have broken up and will not make for such a beautiful – or even visible – sight once it actually arrives.
Astronomers tracking the journey of the comet, which is officially known as C/2019 Y4 (ATLAS), show that it appears to have broken up.
Recent images show that there appears to be an "elongated pseudo-nucleus" that is lined up with the tail. That shape is in line with "a major disruption" of the comet, astronomers Quanzhi Ye and Qicheng Zhang wrote in a message to colleagues.
Those observations were confirmed in follow-up observations taken over the first week of April, confirming the shape and the indication that it seems to have broken apart.
Images taken by amateur astronomers showed that the comet may have broken into pieces in ways that could already be visible from Earth.
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Mystic Mountain, a pillar of gas and dust standing at three-light-years tall, bursting with jets of gas flom fledgling stars buried within, was captured by Nasa's Hubble Space Telelscope in February 2010
Nasa/ESA/STScI
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The first ever selfie taken on an alien planet, captured by Nasa's Curiosity Rover in the early days of its mission to explore Mars in 2012
Nasa/JPL-Caltech/MSSS
3/10
Death of a star: This image from Nasa's Chandra X-ray telescope shows the supernova of Tycho, a star in our Milky Way galaxy
Nasa
4/10
Arrokoth, the most distant object ever explored, pictured here on 1 January 2019 by a camera on Nasa's New Horizons spaceraft at a distance of 4.1 billion miles from Earth
Getty
5/10
An image of the Large Magellanic Cloud galaxy seen in infrared light by the Herschel Space Observatory in January 2012. Regions of space such as this are where new stars are born from a mixture of elements and cosmic dust
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6/10
The first ever image of a black hole, captured by the Event Horizon telescope, as part of a global collaboration involving Nasa, and released on 10 April 2019. The image reveals the black hole at the centre of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster. This black hole resides about 54 million light-years from Earth
Getty
7/10
Pluto, as pictured by Nasa's New Horizons spacecraft as it flew over the dwarf planet for the first time ever in July 2015
Nasa/APL/SwRI
8/10
A coronal mass ejection as seen by the Chandra Observatory in 2019. This is the first time that Chandra has detected this phenomenon from a star other than the Sun
Nasa
9/10
Dark, narrow, 100 meter-long streaks running downhill on the surface Mars were believed to be evidence of contemporary flowing water. It has since been suggested that they may instead be formed by flowing sand
Nasa/JPL/University of Arizona
10/10
Morning Aurora: Nasa astronaut Scott Kelly captured this photograph of the green lights of the aurora from the International Space Station in October 2015
Nasa/Scott Kelly
1/10
Mystic Mountain, a pillar of gas and dust standing at three-light-years tall, bursting with jets of gas flom fledgling stars buried within, was captured by Nasa's Hubble Space Telelscope in February 2010
Nasa/ESA/STScI
2/10
The first ever selfie taken on an alien planet, captured by Nasa's Curiosity Rover in the early days of its mission to explore Mars in 2012
Nasa/JPL-Caltech/MSSS
3/10
Death of a star: This image from Nasa's Chandra X-ray telescope shows the supernova of Tycho, a star in our Milky Way galaxy
Nasa
4/10
Arrokoth, the most distant object ever explored, pictured here on 1 January 2019 by a camera on Nasa's New Horizons spaceraft at a distance of 4.1 billion miles from Earth
Getty
5/10
An image of the Large Magellanic Cloud galaxy seen in infrared light by the Herschel Space Observatory in January 2012. Regions of space such as this are where new stars are born from a mixture of elements and cosmic dust
Nasa
6/10
The first ever image of a black hole, captured by the Event Horizon telescope, as part of a global collaboration involving Nasa, and released on 10 April 2019. The image reveals the black hole at the centre of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster. This black hole resides about 54 million light-years from Earth
Getty
7/10
Pluto, as pictured by Nasa's New Horizons spacecraft as it flew over the dwarf planet for the first time ever in July 2015
Nasa/APL/SwRI
8/10
A coronal mass ejection as seen by the Chandra Observatory in 2019. This is the first time that Chandra has detected this phenomenon from a star other than the Sun
Nasa
9/10
Dark, narrow, 100 meter-long streaks running downhill on the surface Mars were believed to be evidence of contemporary flowing water. It has since been suggested that they may instead be formed by flowing sand
Nasa/JPL/University of Arizona
10/10
Morning Aurora: Nasa astronaut Scott Kelly captured this photograph of the green lights of the aurora from the International Space Station in October 2015
Nasa/Scott Kelly
The Atlas Comet is still relatively new to astronomers, and so little is still known about it and how it could have broken up. As such, it could still be visible from Earth – either as a whole object or broken into pieces – but scientists are unlikely to know for sure until it gets closer to Earth.