Astrophysics question is here --
What is the Dark matter?
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Dark matter is a form of matter thought to account for approximately 85% of the matter in the universe and about a quarter of its total mass–energy density or about 2.241×10−27 kg/m3. Most dark matter is thought to be non-baryonic in nature; it may be composed of some as-yet undiscovered subatomic particles.
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okay, I have seen all of your questions are you from ICSE board or maharashtra State board .
it's little difficult question I literally don't like algebra ;(!!!!!!!!!....
all the best for the exam :). , don't worry you will pass with good grades 100% . think positive everything will be Okay . all the best for exam.
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