At Any Scale

  Jan 27, 2017 Plasma phenomena are similar no matter how big or how small. Almost ten years ago, astronomers discovered an energy signature they called a “Fast Radio Burst”, or FRB. The event lasted five milliseconds, reportedly releasing more energy than the Sun puts out in a month. Distance…

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Black Wreckage

Jan 25, 2017 Black holes are said to collide. NASA launched the Nuclear Spectroscopic Telescope Array (NuSTAR) aboard a Pegasus rocket on June 13, 2012. A new X-ray image highlights a “monster of a galactic mashup”: two colliding galaxies, known as Arp 299, with “supermassive black holes” inside them. According…

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Ion Beams

  Jan 24, 2016 Electricity is the active agent on Enceladus. A previous Picture of the Day announced that the Cassini space probe, currently orbiting Saturn, was about to fly through one of the plumes of vapor that erupt from the southern plains of its moon, Enceladus. Enceladus is a…

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Twin Tails

  Jan 20, 2107 Two types of pulsars. The basic idea is to shove all fundamental difficulties onto the neutron and to do quantum mechanics in the nucleus. — Werner Heisenberg: Letter to Niels Bohr, June 20, 1932. Quoted in Uncertainty: The Life and Science of Werner Heisenberg (1992) by…

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The Truth Will Out

  Jan 19, 2016 Astronomical research tends to instigate foregone conclusions. The Picture of the Day never considers questions that requires a search for subjective meaning in the Universe. Analyzing the observations from NASA and others is enough, in most instances, to draw correspondence between theories in peer-reviewed journals and…

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A Fox in the Henhouse

  Apr 17, 2016 Electromagnetism rules the Universe. Birkeland currents transport electric charges through space along twisting electromagnetic filaments that can span intergalactic distances. They are seen at all cosmic scales because almost every celestial object in the Universe is filamentary. Planetary nebulae are webs of lighted tendrils; energetic galaxies emit…

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