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The solar system may be a lot hairier than we thought. Scientists have found that there may be long filaments, or "hairs," of dark matter around Earth and our solar system.

Dark matter is an invisible, mysterious substance that makes up about 27 percent of all matter and energy in the universe. Regular matter, which makes up everything else, can easily been seen; however, regular matter only makes up about 5 percent of the universe. The rest is dark energy, which is a strange phenomenon associated with the acceleration of the expanding universe.

Neither dark matter nor dark energy has even been directly detected, though many experiments are trying to unlock the mysteries of dark matter, whether from deep underground or in space. Based on many observations of its gravitational pull in action, scientists are certain that dark matter exists.

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