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The solar system might be a lot hairier than we thought. A new study publishing this week in the Astrophysical Journal by Gary Prézeau of NASA's Jet Propulsion Laboratory, Pasadena, California, proposes the existence of long filaments of dark matter, or "hairs." Dark matter is an invisible, mysterious substance that makes up about 27 percent of all matter and energy in the universe.
The regular matter, which makes up everything we can see around us, is only 5 percent of the universe. The rest is dark energy, a strange phenomenon associated with the acceleration of our expanding universe.
Hairs emerging from planets have both "roots," the densest concentration of dark matter particles in the hair, and "tips," where the hair ends. When particles of a dark matter stream pass through Earth’s core, they focus at the "root" of a hair, where the density of the particles is about a billion times more than average. The root of such a hair should be around 600,000 miles (1 million kilometers) away from the surface, or twice as far as the moon.
The stream particles that graze Earth's surface will form the tip of the hair, about twice as far from Earth as the hair’s root. "If we could pinpoint the location of the root of these hairs, we could potentially send a probe there and get a bonanza of data about dark matter," Prézeau said.
The regular matter, which makes up everything we can see around us, is only 5 percent of the universe. The rest is dark energy, a strange phenomenon associated with the acceleration of our expanding universe.
originally posted by: Gothmog
The regular matter, which makes up everything we can see around us, is only 5 percent of the universe. The rest is dark energy, a strange phenomenon associated with the acceleration of our expanding universe.
I do believe this part....except instead of "dark energy" should they have stated "dark matter" ? As far as the rest
Another fascinating finding from these computer simulations is that the changes in density found inside our planet – from the inner core, to the outer core, to the mantle to the crust – would be reflected in the hairs. The hairs would have "kinks" in them that correspond to the transitions between the different layers of Earth.
Theoretically, if it were possible to obtain this information, scientists could use hairs of cold dark matter to map out the layers of any planetary body, and even infer the depths of oceans on icy moons.
originally posted by: Gothmog
The regular matter, which makes up everything we can see around us, is only 5 percent of the universe. The rest is dark energy, a strange phenomenon associated with the acceleration of our expanding universe.
I do believe this part....except instead of "dark energy" should they have stated "dark matter" ? As far as the rest
originally posted by: abe froman
What are the practical applications?
originally posted by: anotheramethyst
a reply to: Gothmog
no. everything we know and understand (matter, energy, antimatter) makes up 5% of the universe. 27% is dark matter, or something we have never seen before and don't understand at all but kinda sorta behaves like matter. the rest, 68% of the universe, is dark energy, something we have never seen before and know nothing about that seems to behave kinda like energy.
i'm skeptical about some of the cutting edge physics, i think it's possible dark matter and dark energy don't exist and they were postulated to fill gaps in our current theories because we're actually wrong about something else. i think physics is on the verge of some major breakthroughs and we will think very differently about the universe very soon, and then we'll spend another 50 years sorting through all these types of theories and fitting them back together. i could be wrong though
originally posted by: Realtruth
NASA Scientist Claims - Earth Is Surrounded By Strings of Dark Matter
originally posted by: abe froman
What are the practical applications?
originally posted by: namelesss
I'm thinking this whole 'dark matter' stuff is an Occam's Razor violating desperate theory meant to correct erroneous theory/understanding!
Magical 'stuff' filling the darkness of our ignorance!
originally posted by: abe froman
What are the practical applications?