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The universe’s biggest structure that shouldn’t exist
The Hercules-Corona Borealis Great Wall stretches 10 billion light years, defying physics that suggest structures of that size should be impossible.
We measure the “warmness” of the dark matter, i.e. the comoving root-mean-square thermal velocity v hrms (1) , with nearly 3000 spiral galaxy rotation curves in the ...
Key Points ProShares - UltraPro QQQ (TQQQ) and Direxion Daily S&P 500 Bull 3X Shares (SPXL) both deliver 3x daily leverage. However, they differ sharply on tech sector exposure, historical risk, and ...
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