Radio-quiet neutron star Radio-quiet neutron star A radio-quiet neutron star is a neutron star that does not seem to emit radio emissions, but is still visible to Earth through electromagnetic radiation at other parts of the spectrum, particularly x-rays and gamma rays. Most detected neutron stars are pulsars, and emit radio-frequency electromagnetic radiation. About 700 radio pulsars are listed in the Princeton catalog, and all but one emit radio waves at the 400 MHz and 1400 MHz frequencies. That exception is Geminga, which is radio quiet at frequencies above 100 MHz, but is a strong emitter of X-rays and gamma rays. In all,
A Beam of Sun to Shake the Sky A Beam of Sun to Shake the Sky A Beam of Sun to Shake the Sky is a public art work by American artist Richard Taylor, located in downtown Milwaukee, Wisconsin. The sculpture was created for the Central Milwaukee Public Library as part of the remodeling of the Wells Street entrance. "A Beam of Sun to Shake the Sky" consists of two vertically oriented sculptures set upon massive granite pedestals in front of the library's glass facade. The sculptures appear made of bright red ribbon-like strips of painted aluminum that snake skyward. The individual strips each contain cut-out letters in