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SassyLady
06-25-2014, 07:12 PM
Are we ready for invasion from another galaxy ... peaceful or not?

NASA detects odd X-ray signal 240 million light years away



There's never a dull moment —er, light year — in outer space.



NASA's Chandra X-ray Observatory (http://chandra.si.edu/photo/2014/perseus/) and the European Space Agency's XMM-Newton spotted an unusual X-ray signal in the data received from the Perseus galaxy cluster some 240 million light years away.
The signal appeared as an intensity spike at an X-ray wavelength where none had been seen before.
So what is it? Is it lovable '80s sitcom star Alf returning to Earth to provide us all with four more seasons of his hilarious show and possibly star in a made-for-TV movie?
Alas, probably not. Though the origin of the signal is not yet known, one of the possible explanations has scientists pretty pumped up. The signal could have originated from the decay of sterile neutrinos, particles that some experts have proposed as the source of dark matter.
Dark matter is believed to make up 85 percent of the universe. However, because it doesn't emit or absorb light, it can't be seen or even proven to exist.
There may be other less exciting explanations. Time will, hopefully, tell.
"More data and investigation will be needed to confirm both the signal's existence and nature," NASA reports (http://chandra.si.edu/photo/2014/perseus/).
The mind boggles.
http://news.yahoo.com/nasa-detects-x-ray-signal-240-million-light-years-away-162806401.html

aboutime
06-25-2014, 08:54 PM
Wow! So now, we all know. That signal was first sent 240 million light years ago?

Wonder if whoever sent it is LAUGHING at all of us with Captain Kirk?:laugh:

KarlMarx
06-26-2014, 06:08 AM
They mention dark matter, which is the missing part of the matter in the universe. Dark Matter is called "dark" because it does not interact with other matter, either chemically, electrically, or otherwise, except gravitationally. You can't see it, no dectecters that we have can see it. You could be standing in a room full of the stuff and not know it.

aboutime
06-26-2014, 12:35 PM
They mention dark matter, which is the missing part of the matter in the universe. Dark Matter is called "dark" because it does not interact with other matter, either chemically, electrically, or otherwise, except gravitationally. You can't see it, no dectecters that we have can see it. You could be standing in a room full of the stuff and not know it.


KarlMarx. When they finally got to the part that described DARK MATTER. I was laughing as I realized they were probably talking about how FAR BEHIND the rest of the Universe...OBAMA really is in relation to the real world. But then...It would have to be HALF DARK MATTER. Wouldn't it?:laugh:

revelarts
09-11-2014, 07:06 PM
They mention dark matter, which is the missing part of the matter in the universe. Dark Matter is called "dark" because it does not interact with other matter, either chemically, electrically, or otherwise, except gravitationally. You can't see it, no detectors that we have can see it. You could be standing in a room full of the stuff and not know it.

or the Emperor could simply have no clothes.