small galaxies tagged posts

Small Galaxies likely played important Role in Evolution of the Universe

The University of Minnesota study shows that high-energy light from small galaxies, like the Pox 186 galaxy depicted above, may have played a key role in the reionization and evolution of the Universe. Credit: Podevin, J.f., 2006
The University of Minnesota study shows that high-energy light from small galaxies, like the Pox 186 galaxy depicted above, may have played a key role in the reionization and evolution of the Universe. Credit: Podevin, J.f., 2006

Researchers find first-ever galaxy observed in a ‘blow-away’ state. A new study led by University of Minnesota astrophysicists shows that high-energy light from small galaxies may have played a key role in the early evolution of the Universe. The research gives insight into how the Universe became reionized, a problem that astronomers have been trying to solve for years.

The research is published in The Astrophysical Journal, a peer-reviewed scientific journal of astrophysics and astronomy.

After the Big Bang, when the Universe was formed billions of yea...

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Dark Matter may be Hitting the Right Note in Small Galaxies

Astronomers observed that the dark matter does not seem to clump very much in small galaxies, but their density peaks sharply in bigger systems such as clusters of galaxies. It has been a puzzle why different systems behave differently.
Credit: Kavli IPMU – Kavli IPMU modified this figure based on the image credited by NASA, STScI

Dark matter may scatter against each other only when they hit the right energy, say researchers in Japan, Germany, and Austria in a new study. Their idea helps explain why galaxies from the smallest to the biggest have the shapes they do.

Dark matter is a mysterious and unknown form of matter that comprises more than 80 per cent of matter in the Universe today...

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