Astronomy and Celestial Mechanics.docx - Fields not based...

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Fields not based on the electromagnetic spectrumIn addition to electromagnetic radiation, a few other events originating from great distances may be observed from the Earth.In neutrino astronomy, astronomers use heavily shielded underground facilitiessuch as SAGE, GALLEX, and Kamioka II/IIIfor the detection of neutrinos. The vast majority of the neutrinos streaming through the Earth originate from the Sun, but 24 neutrinos were also detected from supernova 1987A.[47]Cosmic rays, which consist of very high energy particles (atomic nuclei) that can decay or be absorbed when they enter the Earth's atmosphere, result in a cascade of secondary particles which can be detected by current observatories.[55]Some future neutrino detectorsmay also be sensitive to the particles produced when cosmic rays hit the Earth's atmosphere.[47]Gravitational-wave astronomyis an emerging field of astronomy that employs gravitational-wave detectorsto collect observational data about distant massive objects. A few observatories have beenconstructed, such as the Laser Interferometer Gravitational ObservatoryLIGO. LIGO made its first detectionon 14 September 2015, observing gravitational waves from a binary black hole.[56]A second gravitational wavewas detected on 26 December 2015 and additional observations should continue but gravitational wavesrequire extremely sensitive instruments.

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Term
Summer
Professor
Braile
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