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Space & Astronomy

'Ghost' galaxy is almost entirely dark matter

By T.K. Randall
August 28, 2016 · Comment icon 3 comments

Dragonfly 44 has been referred to as our own galaxy's 'Dark Twin'. Image Credit: NASA/ESA/ESO
An enigmatic galaxy known as Dragonfly 44 is believed to be comprised of 99.99 percent dark matter.
Announced on Thursday, the galaxy, which is situated over 300 million light years away, was initially picked up by the Dragonfly Telephoto Array in Toronto before being investigated further by astronomers using the Gemini North and Keck II telescopes in Hawaii.

While it is not the first time that a galaxy has been found with a significant quantity of dark matter, this one contains such an overwhelming amount of it that there is hardly anything else there.

How a galaxy like this one originally came to form however remains a complete mystery.

"It means we don't understand, kind of fundamentally, how galaxy formation works," said astronomer Pieter van Dokkum from Yale University.

Source: Tech Times | Comments (3)

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Recent comments on this story
Comment icon #1 Posted by SurgeTechnologies 7 years ago
We don't understand many things fundamentally, we are just now beginning to realise that our understanding of things we don't understand is ever expanding.
Comment icon #2 Posted by BeastieRunner 7 years ago
Is this any relation to the one found around Dragonfly 44?
Comment icon #3 Posted by paperdyer 7 years ago
Very interesting.  I agree with Surge, the more we less, the less we realize we know. This might  be a good basis for a SciFi movie .  A team of scientist launch a space ship to explore Dragonfly 44.  Mayhem ensues.

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