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“Dark Matter”

Apr 22, 2016 07:08 PM ET // Ian O'Neill
Astronomers are highly aware that the vast majority of matter in our universe is invisible, or 'dark.' So what the heck is it? Well, now we have a good idea as to what it probably isn't.
Apr 15, 2016 05:06 AM ET
You know how hard it is to get your mind around the size of even a single galaxy in the universe? Now try to imagine a wall of galaxies cemented together by dark matter.
Mar 21, 2016 07:00 PM ET // Charles Q. Choi,
Dark matter could be made of particles that each weigh almost as much as a human cell and are nearly dense enough to become miniature black holes, new research suggests.
Mar 2, 2016 05:27 PM ET // Ian O'Neill
Tune in tonight at 7 p.m. for a fascinating Perimeter Institute public lecture on the mysteries of dark matter.
Dec 26, 2015 02:00 AM ET
We hear a lot about dark matter, and how physicists are ever on the hunt for it. But how do you look for something you can't even see?
Dec 4, 2015 01:21 PM ET // Ian O'Neill
In new observations, an extremely concentrated knot of ancient galaxies undergoing energetic star formation at the dawn of our universe has been spied embedded in a knot of dark matter.
Nov 23, 2015 03:48 PM ET // Ian O'Neill
Are the planets of the solar system sprouting invisible dark matter 'hairs'? If so, does this indicate an interplanetary trend of dark matter 'beards'?
Nov 19, 2015 09:01 PM ET // Ian O'Neill
While measuring the speed of stars whirling around a nearby dwarf galaxy, astronomers have realized that a reservoir of dark matter may be lurking within.
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