Social Media Sidebar


Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

Just because something doesn’t do what you planned it to do doesn’t mean it’s useless.


Thomas Edison

Dim matter filaments herald birth of massive new galaxy

Posted in Science on 2nd May, 2014 12:07 AM by AlexMuller

Astronomers have theorized that gas from the Big Bang spread out all across the Universe, creating a sort of “cosmic web” that flows between galaxies, connecting them. This gas, called the intergalactic medium (IGM), is a series of filaments that has crossed through the whole of space, from the time of the very first galaxies.


Recently, CalTech’s Cosmic Web Imager was able to map parts of this network, and also discovered a possible spiral galaxy in the making that's three times larger than the Milky Way.

The gas of the IGM is also known as "dim matter." 96 percent of the mass of the universe is dark matter, and just one percent is stars and galaxies, while the remaining three percent is dim matter. Dim matter, being dim, is incredibly difficult to see, even with the most powerful telescopes.
We’ve only ever observed it before by studying the absorption of light between Earth and very bright objects like quasars (a quasar is the nucleus of a young galaxy). However, we only have limited information when studying the light between our planet and quasars: we know the dim matter is there, but we can't see how it’s distributed.
The Cosmic Web Imager allows us to see more of the full picture. The telescope looked at the region between two bright objects in space: in this case, a quasar and a Lyman alpha blob (an area of hydrogen that shows up as bright light when exposed to a specific ultraviolet wavelength).
Both areas appear bright in images, making the filaments of the IGM stand out. The Imager saw one filament near the quasar that measured over one million light-years long. This filament probably is fueling the quasar’s galaxy. More importantly, three other filaments were seen flowing into the Lyman alpha blob in spirals and affecting it, signifying the possible birth of a new galaxy.

Tags: spacegalaxiesmatterdark matterBig Banguniverse

Read original article » Back to category



Recent headlines

  • Posted in Science on 2018-11-18 20:04:45
    Rocket Lab launched seven small more
    Posted in Hardware on 2018-11-18 19:58:28
    SpaceX will be going all in to launch unmanned BFR more
    Posted in Medicine on 2018-11-17 12:31:22
    Anti-aging compounds targeting Alzheimer’s move more
    Posted in Hardware on 2018-11-13 05:19:55
    NASA certifies SpaceX's Falcon 9 for its most more
    Posted in Software on 2018-11-09 03:19:01
    OpenAI launches reinforcement learning more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs, more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target more

Recent Blog Posts

  • Posted by AlexMuller
    Even light drinking increases risk of more
    Posted by AlexMuller
    Researchers have discovered how to slow more
    Posted by AlexMuller
    Human retinas grown in a dish explain how color vision more
    Posted by AlexMuller
    The smartphone app that can tell you’re depressed before more
    Posted by AlexMuller
    Neural networks don’t understand what optical illusions more

Login to your Account

Login to your PlanetTech Account here

Remember me

Create a New Account

You just need username and password

The following errors occured:
Verify password:
Remember me