Researchers at OIST built a graphite disk that levitates and spins for hours in a vacuum, showing how perfect magnetic symmetry can cancel energy loss.
Modern Engineering Marvels on MSN
Black Hole or Dwarf Galaxy? Webb Unveils 20,000-Light-Year Galactic Scar
Not often do astronomers come across a tear in the tissue of a galaxy a scab so big it might span one-fifth of the Milky Way.
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