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Scientists solve 'missing matter' mystery

Posted on Thursday, 28 May, 2020 | Comment icon 8 comments

The missing matter was hiding in plain sight all along. Image Credit: CC BY 4.0 ESO / S. Brunier
New light has been shone on the whereabouts of a large percentage of the universe's missing baryonic matter.
Most of the universe is thought to be made up of dark matter - a mysterious unseen form of matter that cannot be directly observed because it does not absorb, emit or reflect any electromagnetic radiation.

The rest, meanwhile, is comprised of baryonic matter - the normal type of matter that makes up stars, planets, asteroids, nebulae and anything else that we can see or hold in our hands.

Not all the baryonic matter in the universe is accounted for however - a large percentage of it has remained frustratingly elusive, leading scientists on a hunt that has lasted for decades.
Now though, the whereabouts of this missing matter has finally been determined thanks to another recently discovered phenomenon - fast radio bursts - powerful bursts of radio waves originating from deep space that, despite lasting mere milliseconds, generate as much energy as the Sun does in an entire day.

By analyzing how these bursts are dispersed and slowed while traveling across the cosmos, scientists have determined that the missing matter is situated in the cold void of space between galaxies.

"Intergalactic space is very sparse," said Associate Professor Jean-Pierre Macquart, from the Curtin University node of the International Center for Radio Astronomy Research.

"The missing matter was equivalent to only one or two atoms in a room the size of an average office."

"I like a mysterious universe. It means there is much more to be understood. The thing that we've discovered is the atmosphere of the universe. It's the ecosystem in which galaxies live."

Source: ABC.net.au | Comments (8)

Tags: Universe

Recent comments on this story
Comment icon #1 Posted by Tom1200 on 28 May, 2020, 13:28
    Just like I thought.
Comment icon #2 Posted by L.A.T.1961 on 28 May, 2020, 15:24
The more you look the more you will find. Who said Occam's razor.  
Comment icon #3 Posted by acute on 28 May, 2020, 18:01
It's the only way to get your hair cut these days. 
Comment icon #4 Posted by DieChecker on 29 May, 2020, 6:13
I wondered about that when the various interstellar asteroids/comets have come through. If there is that much between star systems, I'd guess much being between galaxies isnt a big next step.
Comment icon #5 Posted by Damien99 on 29 May, 2020, 19:30
Is this new type of matter or matter we knew Always existed  and just couldn’t see
Comment icon #6 Posted by Waspie_Dwarf on 29 May, 2020, 21:09
From the link in the original article:  
Comment icon #7 Posted by Damien99 on 29 May, 2020, 21:46
Thank you now are they implying there is to much of it now that they see it?
Comment icon #8 Posted by Waspie_Dwarf on 29 May, 2020, 23:01
In a word, no. Theory has always said there should be more baryonic matter than could be observed. This accounts for that missing matter.

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