'Galaxy X,' an Invisible Satellite Made of Dark Matter, Could be Lurking at the Milky Way's Edge

Dark matter here we come.

"it’s also obscured from our view by the fact that it’s mad mostly of dark matter."

The dark-side tends to use anger as a weapon, that probably explains why it's mad.

I really really don't understand dark matter.
Its existence is theorized because according to observational astronomy there isn't enough matter in the universe to make E=MC2 work. Well going back to 6th grade I remember algebra told me that A = b + c.
If A is the size of the universe, and b is matter then c must be anti-matter according to most cosmologist.

But what if B is wrong? What if we are not measuring correctly? Seems like the simplest answer. Certainly more reasonable then adding dark matter, dark energy, String Theory M-Theory, 11th dimensions....

Where can I pick up my Nobel prize?

@dodger.

matter + antimatter = 0

and size /= amount of matter?

@ dodgerh8ter

sorry your analogy makes no sense.

it's not the size of the universe that implies dark matter exist its the fact that if you take everything we can see (what makes light and what reflexs it) only makes up 20% of the mass needed to work the way it does.

we can also see the effects of dark matter's in gravitational lensing of background light, rotational speeds of galaxies and temperature distribution of hot gas in galaxies.

all of these clues point to there being alot of something we can't see but has gravity and we call that dark matter.

Actually i agree with @dodger why cant dark matter be antimatter, safely separated by distance in time,i mean whole periodic table ,planets,stars,n galaxies made out of antimatter and not detectable by our normal matter instruments.
May be that also explains the high energy bursts we see here n there,which can not be explained.may be they are because of collision between matter and antimatter(dark matter) worlds..
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@FrogOutOfaWell

simple answer is because antimatter acts just like normal matter in every way (just with the poles reversed) it reflexs light and gives off heat meaning we would see it. while dark matter only interacts through gravity, it's what gives our own galaxy the mass it needs to hold itself together. but it can it can pass right through a planet or person and you'd never know.it can even pass through itself with interacting other dark matter. so there is no separation by "distance in time" to keep it from interacting with matter.

so if the theories are right dark matter is in you house right now, heck its inside you and I at this very second most likely . now seeing as you and I haven't exploded we can say its not antimatter.

buckrodgers
Could be matter was and can be created from dark matter. Good theory as any. The so called big bang could have been this event. For some reason God decided that some of this DARK MATTER had a spontaneous or planned degeneration into 3/4 dimensional matter. Since there is no longer a balance of dark energy and dark matter in this region of existence, the amount of dark energy is greater than the amount of dark matter. We as 3/4 dimensional matter exist in the same space as this dark matter and energy and are affected by it. Thus the inbalance of the FORCE keeps the visible universe expanding This due to an greater amount of dark energy in this area. Where is Yoda? We need to rebalance the farce.
Could it be this dark matter/energy is what we know as the spirit world? If so it would explain a lot of things. The Bible states that all things of the flesh are first manifest in the spirit. It interacts with us but we can't quite put our fingers on it.

@ dex drako; So, is it true that we are going on the supposition that dark matter is affected by gravity? AND that it can 'flow through itself'? Because it seems to me that if it is affected by gravity, AND can exist in the same space-time as normal matter; that we should therefore almost never see it in evidence at all. Wouldn't it be bound by gravity to the largest gravitational body in any locale unless or until that body is destroyed? If it can flow through itself as well, then wouldn't the actual place occupied by the dark matter be very small, and bound literally at the point of highest emitted gravity?

@orangebloodedal
Did God really decide that?
Dark Matter is everything outside of our atmosphere. Obviously, besides quasars, stars, nebulae, etc. Everything that is nothing. Where there is nothing, there is only dark matter. Think of it as waving your hand through the air. People that don't think outside the box would say they're not touching anything, when actually they're touching oxygen, nitrogen, CO2 and everything else your local air supply would contain. Question: Say you were traveling through space in a capsule, powered by nothing but inertia, if you were to leave the capsule, would you travel along side the capsule with the same inertia you had inside, or would you be left behind? If you were to wave your hand in space, would you feel anything?

I guess what I'm trying to say is if Dark Matter makes up 70% of the known universe, wouldn't you think its all that darkness we see when we look up in the night sky?

On another note. I believe gravity only works strickly with dark matter, nothing else. Space is a sea of dark matter, and gravity is the whirlpool pulling the water to it. You get caught in the waves, you're in for one hell of a ride. But of course, water would cause drag, dark matter would not.