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When galaxies collide: Moments of 'doom' captured majestically by Hubble (IMAGE)
Published time: 11 Jan, 2017 21:56
When galaxies collide: Moments of 'doom' captured majestically by Hubble (IMAGE)
The collisoion was captured by the Hubble Space Telescope. © NASA
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A smudge in space is more than is seems as the Hubble Space Telescope captures on camera the collision of two galaxies. The beautiful image reveals two gas-rich spiral galaxies as their destiny slowly unravels.
Named IRAS 14348-1447 after the Infrared Astronomical Satellite (IRAS) responsible for its discovery the celestial object is the violent meeting of millions of stars after a gravitational tug of war created when they veered too close to each other.


Located over a billion light years from Earth, IRAS 14348-1447 is known as an ultraluminous infrared galaxy, shining brightly in the infrared part of the spectrum. The huge amount of molecular gas present give it a whirling appearance, with tails and wisps.

In November last year another galactic collision was captured by the Atacama Large Millimeter Array radio telescopes in Chile. A galaxy known as IC 2163 glanced off another named NGC 2207 creating a violent but beautiful formation 114 million light years away.


planet Earth's time will come too to hit with hotter and bigger then sun star, as already predicted and forearm by scientific studies.


https://www.nasa.gov/mission_pages/h...y-collide.html


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NASA's Hubble Shows Milky Way is Destined for Head-On Collision05.31.12

NASA astronomers announced Thursday they can now predict with certainty the next major cosmic event to affect our galaxy, sun, and solar system: the titanic collision of our Milky Way galaxy with the neighboring Andromeda galaxy.

The Milky Way is destined to get a major makeover during the encounter, which is predicted to happen four billion years from now. It is likely the sun will be flung into a new region of our galaxy, but our Earth and solar system are in no danger of being destroyed.

illustration of how Andromeda and the Milky Way might look in Earth's night sky in 3.75 billion years This illustration shows a stage in the predicted merger between our Milky Way galaxy and the neighboring Andromeda galaxy, as it will unfold over the next several billion years. In this image, representing Earth's night sky in 3.75 billion years, Andromeda (left) fills the field of view and begins to distort the Milky Way with tidal pull. (Credit: NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger)
› Larger image

"Our findings are statistically consistent with a head-on collision between the Andromeda galaxy and our Milky Way galaxy," said Roeland van der Marel of the Space Telescope Science Institute (STScI) in Baltimore.

The solution came through painstaking NASA Hubble Space Telescope measurements of the motion of Andromeda, which also is known as M31. The galaxy is now 2.5 million light-years away, but it is inexorably falling toward the Milky Way under the mutual pull of gravity between the two galaxies and the invisible dark matter that surrounds them both.

This animation depicts the collision between our Milky Way galaxy and the Andromeda galaxy. Hubble Space Telescope observations indicate that the two galaxies, pulled together by their mutual gravity, will crash together about 4 billion years from now. Around 6 billion years from now, the two galaxies will merge to form a single galaxy. The video also shows the Triangulum galaxy, which will join in the collision and perhaps later merge with the Andromeda/Milky Way pair. (Visualization Credit: NASA; ESA; and F. Summers, STScI | Simulation Credit: NASA; ESA; G. Besla, Columbia University; and R. van der Marel, STScI)
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"After nearly a century of speculation about the future destiny of Andromeda and our Milky Way, we at last have a clear picture of how events will unfold over the coming billions of years," said Sangmo Tony Sohn of STScI.

The scenario is like a baseball batter watching an oncoming fastball. Although Andromeda is approaching us more than 2,000 times faster, it will take 4 billion years before the strike.

Computer simulations derived from Hubble's data show that it will take an additional two billion years after the encounter for the interacting galaxies to completely merge under the tug of gravity and reshape into a single elliptical galaxy similar to the kind commonly seen in the local universe.

Although the galaxies will plow into each other, stars inside each galaxy are so far apart that they will not collide with other stars during the encounter. However, the stars will be thrown into different orbits around the new galactic center. Simulations show that our solar system will probably be tossed much farther from the galactic core than it is today.

To make matters more complicated, M31's small companion, the Triangulum galaxy, M33, will join in the collision and perhaps later merge with the M31/Milky Way pair. There is a small chance that M33 will hit the Milky Way first.

illustration depicting the collision paths of Triangulum, Andromeda and Milky Way




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