Introduction to general relativity in a setting with comparatively strong gravitational fields. This has become possible thanks to precision observations of binary pulsars. In such a star system, two highly compact neutron stars orbit each other. At least one of them is a pulsar – an astronomical object that emits a tight beam of radiowaves. These beams strike the Earth at very regular intervals, similarly to the way that the rotating beam of a lighthouse means that an observer sees the lighthouse blink, and can be observed as a highly regular series of pulses. General relativity predicts specific deviations from the regularity of these
When the Shadows Beam a compilation album containing all of the songs from the band's first two EPs, as well as additional tracks. It is the band's first release with bassist Billy Hamilton and now former guitarist Neil Boshart. The former continues to be a member today, while the latter appears on every Silverstein release through "Short Songs", with his departure later in 2012. The EP's title is derived from a line in "Last Days of Summer". When the Shadows Beam When the Shadows Beam is an EP released by Silverstein in 2002. Only limited copies were printed. The songs Red Light Pledge, Wish