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Particle Physics

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Chandra telescope

X-RAY ANOMALY  NASA’s Earth-orbiting Chandra telescope has found hints of a mysterious bump in a plot of X-rays. Scientists think the excess X-rays may be the result of decaying dark matter particles.


MISPLACED MATTER  A search for dark matter by the XENON100 experiment has found nothing. Photomultiplier tubes within the detector, shown above, detect light produced in interactions possibly caused by dark matter particles.

Mainz Microtron

PETITE PROTON  An electron scattering experiment (shown) at the Mainz Microtron in Germany may have found evidence that supports the case for a smaller proton, according to a new analysis of old data.

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