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“Monster stars” may finally be seen, direct proof just arrived
For two decades, astronomers have chased a cosmic ghost: ultra‑massive “monster stars” that theory said must have existed but ...
Dark matter and normal matter have been wrenched apart by the tremendous collision of two large clusters of galaxies. The discovery, using NASA’s Chandra X-ray Observatory and other telescopes, gives ...
Even after decades of searching, scientists have never seen a particle of dark matter. Evidence for the substance’s existence is close to incontrovertible, but no one yet knows what it is made of. For ...
https://doi.org/10.4169/amer.math.monthly.118.03.229 • https://www.jstor.org/stable/10.4169/amer.math.monthly.118.03.229 Copy URL Abstract We give a natural and ...
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