Post Vintage (291): Historias de Vía Andrómeda
Post Vintage (291): Historias de Vía Andrómeda
What will happen when Andromeda and the Milky Way collide?
It is the galaxy, not counting the small satellites of ours, closer, the only one visible to the naked eye as a dim luminous spot in the skies of the Southern Hemisphere. And the distance is reduced to the rate of 110 Kilometers / Second. And is that both are living an inevitable process of convergence in one. It may sound catastrophic, but it is a usual process in the Universe, expanding as a whole, but living, at local levels, an opposite trend. And the one known as "Local Group", the small group of galaxies linked by their common gravity of which we are a part, is no exception.
Andromeda and the Milky Way are, in this order, the two largest, and therefore it is not strange that all the dynamics of the group pivot around them. And they are attracting each other, as evidenced by the luminous spectrum of this first one, displaced towards the blue, just in contrast to those that are at a greater distance and are not part of the group, which has them displaced to red. And while the latter indicates estrangement, the Andromeda indicates just the opposite. It is approaching, and the latest estimates indicate that both should collide within 3-4 billion years. Too far in time for us to worry the least, but still, for those who care about the fate of our distant descendants (if they exist), let's see the consequences that event size will have.
In a collision of galaxies of different sizes, the largest absorbs the smallest in its entirety, incorporating the stars of the latter to their own. It is what is called "galactic cannibalism", and the same Milky Way It is not alien to it. Actually it still continues to do so right now, as they reveal faint bands of dust, gas and stars that surround it, small galaxies in the process of being devoured. But what happens when the protagonists are two of a relatively similar size? As it is easy to imagine, a cataclysm on a large scale, although curiously inoffensiveor for the stars that compose them.
When the Milky Way Y Andromeda come into collision (in a slow process it will last several billions of years more) their respective spiral structures will be completely destroyed, and eventually they will end up shaping a giant elliptical galaxy with no discernible spiral structure. The gravitational chaos will unleash a stage of new stellar births, a birth boom caused by the compression and collapse of most of the clouds of gas and dust existing in both, and following that wake of life, the appearance of supernovas will shoot up, as the stars of greater size, born in this stage of chaos, die quickly, chemically enriching this new galactic city. Via Andromeda or Andromeda Milk, as we want.
However, that same explosion of births will cause the new galaxy to age prematurely, by exhausting most of the available fuel in an accelerated manner. That is why elliptical galaxies, born in this type of events, have many old stars and a very low level of births. Over time, as that initial stage is left behind, Via Andromeda each time it will look more like them. Y who knows if with the later addition of the galaxy Triángulo, the third one in tA.Myear of the Local Group, and that could be added to the process late.
¿And that Will it happen with their respective stars? Despite of that it is estimated that Milky Way has up to 300,000 million, and that the population of Andromeda can be up to three times higher, entre them open dInstances huge A galaxy is basically empty space. Therefore the posibility of a collision between it is extremely improbable. Another story is where it will end finally, given the generated chaos, accentuated by the fusion of their respective central black holes, and the gravitational waves generated during the process. Possibly not a few will end up being converted withorcidace as "fugitive stars", projected outside the nascent galaxy, towards the darkness more absolute.
Is the This scenario is located in a future so distant that, from our point of view, it is located at infinity, beyond existence. Y in a certain way it is, since the fusion will be complete and lto elliptical Via Andromeda a realityd within 7,000 million years, when the Sun Y Lto Earth already they will only be a memory located several billions of years ago. Which one it will be the destiny of Humanity for entonces, if it continues to exist by then, is something that we can only imagine in our strangest dreams, located in a very galaxy, very far.
Imagining the approximation and fusion of the Milky Way and Andromeda from a planet located in this first one.
Examples of mergers between galaxies seen by Hubble. Although the Universe expands, locally many galaxies remain tied together, in the form of galaxy clusters and superclusters. Therefore, this type of mergers is relatively common.
[youtube https://www.youtube.com/watch?v=vT35WdBTdUY]
Vía Láctea Vs Andromeda.
What Happens When Galaxies Collide?
!function(f,b,e,v,n,t,s)
{if(f.fbq)return;n=f.fbq=function(){n.callMethod?
n.callMethod.apply(n,arguments):n.queue.push(arguments)};
if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
n.queue=[];t=b.createElement(e);t.async=!0;
t.src=v;s=b.getElementsByTagName(e)[0];
s.parentNode.insertBefore(t,s)}(window, document,'script',
'https://connect.facebook.net/en_US/fbevents.js');
fbq('init', '369524843414444');
fbq('track', 'PageView');
.
SOURCE LINK ERESVIRAL.COM https://www.beviral.online
Comentarios
Publicar un comentario