Atom & Cosmos

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illustration of proton collision

NEW LIGHT A possible new particle shows up in proton collisions at the Large Hadron Collider that produce two photons, as in an event (illustrated here) seen by the CMS detector.

Illustration of ASTRO-H (Hitomi)

The orbiting X-ray observatory ASTRO-H (illustrated) is officially dead, the Japanese space agency JAXA reports. 

dwarf planet Makemake and newly discovered moon

A 2015 image from the Hubble Space Telescope reveals a faint moon orbiting the dwarf planet Makemake.

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