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posted by mrpg on Wednesday October 11 2017, @07:23AM   Printer-friendly
from the tebow-satellite-had-nothing dept.

Baryonic (normal) matter has been found to be denser in the space between galaxies (the intergalactic medium) than previously thought. The observations are said to account for the missing baryonic matter expected to exist in the universe:

The missing links between galaxies have finally been found. This is the first detection of the roughly half of the normal matter in our universe – protons, neutrons and electrons – unaccounted for by previous observations of stars, galaxies and other bright objects in space.

You have probably heard about the hunt for dark matter, a mysterious substance thought to permeate the universe, the effects of which we can see through its gravitational pull. But our models of the universe also say there should be about twice as much ordinary matter out there, compared with what we have observed so far.

Two separate teams found the missing matter – made of particles called baryons rather than dark matter – linking galaxies together through filaments of hot, diffuse gas.

"The missing baryon problem is solved," says Hideki Tanimura at the Institute of Space Astrophysics in Orsay, France, leader of one of the groups. The other team was led by Anna de Graaff at the University of Edinburgh, UK.

Because the gas is so tenuous and not quite hot enough for X-ray telescopes to pick up, nobody had been able to see it before.

A Search for Warm/Hot Gas Filaments Between Pairs of SDSS Luminous Red Galaxies

Missing baryons in the cosmic web revealed by the Sunyaev-Zel'dovich effect


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  • (Score: 4, Insightful) by Anonymous Coward on Wednesday October 11 2017, @12:35PM (1 child)

    by Anonymous Coward on Wednesday October 11 2017, @12:35PM (#580425)

    from other comments you've made I get the impression you're an educated person.
    if you don't trust the specialists who spend 10 years studying in order to say "dark matter is required", your only alternative is to spend those 10 years yourself.

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  • (Score: 0) by Anonymous Coward on Wednesday October 11 2017, @05:05PM

    by Anonymous Coward on Wednesday October 11 2017, @05:05PM (#580577)

    He's a smart guy! He will get it figured out in 7!