Invisible Galaxy Of Dark Matter Discovered

In 2001, a group of astronomers led by Neil Trentham of the University of Cambridge predicted the existence of dark galaxies - vast collections of dark matter. Dark galaxies are thought to form when the density of matter in a galaxy is too low to create the conditions for star formation.

Since that time, an international team from the UK, France, Italy and Australia have been searching for dark galaxies with radio telescopes.

Objects thought to be dark galaxies have since turned out to contain stars when studied with high-powered optical telescopes. Others have been found to be the remnants of two galaxies colliding. However, when the scientists studied the area in question using the Isaac Newton Telescope in La Palma, they found no visible trace of any stars, and no nearby galaxies that would suggest a collision.

The astronomers first took observations of the dark object back in 2000 and it has taken almost five years to rule out all the other possible explanations. VIRGOHI21 appears to be the first dark galaxy ever detected.


(The ellipse shows were the dark galaxy was found)

Dr Robert Minchin from Cardiff University is one of the UK astronomers who discovered the mysterious galaxy. He explains:

"From the speed it is spinning, we realised that VIRGOHI21 was a thousand times more massive than could be accounted for by the observed hydrogen atoms alone. If it were an ordinary galaxy, then it should be quite bright and would be visible with a good amateur telescope."

In 1929, science fiction author Edmond Hamilton wrote Outside the Universe. In this tale, a equally diverse interstellar team from Earth (leader Dur Nal), Antares (represented by metal-bodied Korus Kan) and Spica (in the person of lobster-man Jhul Din) are on patrol duty at the edge of our galaxy when they see a swarm of hostile spaceships entering from intergalactic space. *Spoiler Alert!* It turns out that the ships are piloted by serpent-men from a dying, invisible galaxy. They had first tried to take over the Andromeda galaxy, but were defeated and forced to move on.

Read more about the discovery at First Invisible Galaxy Discovered in Cosmology Breakthrough and Seeing the invisible - first dark galaxy discovered. Special thanks to Winchell Chung for the tip on this story.

Scroll down for more stories in the same category. (Story submitted 2/26/2005)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 2 )

Related News Stories - (" Space Tech ")

Autonomous 'Fiberbots' Weave Large Structures
'It extrudes material like a spider.' - Charles Sheffield, 1979.

How Do You Put An Asteroid Into Earth Orbit? Carefully!
'...she would have to be coaxed by another series of pats into a circular orbit.' - Robert Heinlein, 1939.

PD Aerospace Space Plane By 2023
'The sleek, tapered space shuttle lay immobile upon the private landing field...' - Frederic Arnold Kummer, Jr., 1940.

International Space Station Leak Plugged - With Finger
'These tag-alongs search out stray leaks' - Robert Heinlein, 1948.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Jaguar I-Pace Audible Vehicle Alert System For EVs
'Of course not a vehicle moved by means of internal explosions of a derivative of rock oil...'

Autonomous 'Fiberbots' Weave Large Structures
'It extrudes material like a spider.'

Birds Aren't Real - Wake Up, California! (With Bird Watching Guide)
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'

Self-Healing Material Pulls Carbon Out Of The Air
'... could seal the punctures.'

IRL Glasses Block Screens, Limit Vision To Real Life
'If you couldn't see the ads, how would you know what was fashionable?'

Testing The Single-Person Spacecraft
'...the lower part of the suit was simply a rigid cylinder.'

Shapeshifting Materials Transform By Light
'Its lines wavered, flowed, and then painfully reformed.'

Fully Automated Farm Iron Ox Hydroponics
'Had these machines in some incredible fashion been provided with brains?'

BrainNet Social Network Of Brains
'I used my implant to tell MILLIE what we wanted and she took care of it'

Phil Nuyttnn's City Under The Sea
'Under the lower roof there was no water, but a clear and luminous atmosphere...'

IONITY Opens First 10 Fast-Charging Stations
'Recharge the batteries... in almost every town and village...'

Superstrong Multilayer Metal-Graphene Composite Material
Negligible increase in weight increased material strength by hundreds of times.

Deepfakes Imperil Democracy (George Orwell, Right Again)
'All history was a palimpsest, scraped clean and reinscribed exactly as often as was necessary.'

String Art Courtesy Of Robot Artist
The number of different ways to span a thread between a larger number of hooks is astronomical.

Still Wondering If You'd Work For A Robot Boss?
'This is all coming to you courtesy of the simstim unit wired into your deck, of course.'

World's First Autonomous Tram In Germany
What's it like for autonomous trams when they're turned off at night?

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.