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What is space made of? An astrophysics expert explains all the components – from radiation to dark matter – found in the vacuum of space

  • Written by Nilakshi Veerabathina, Professor of Physics Instruction, University of Texas at Arlington
imageLight from stars travels through space, which is mostly an empty vacuum. William Attard McCarthy - McCarthy's PhotoWorks/Moment via Getty Imagesimage

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What is space made of – what does gravity...

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