Matter & Energy

Topic Image Rail

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.

gamma ray map

BRIGHT SKY  A map of two-thirds of the sky shows bright spots where high energy gamma rays originate, including in the Milky Way (left) as well as nearby galaxies, such as Markarian 421 and Markarian 501. (Constellations are superimposed for orientation.)

heat engines

Heat engines, big and small, turn heat into mechanical work. The steam engine (left) pushes a piston that turns a wheel. A pint-sized version (right) sets an atom in motion to perform work.

Matter & Energy

Subscribe to RSS - Matter & Energy