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Observations that include studies of binary pulsars, thermal emission from isolated neutron stars, glitches from pulsars and quasi-periodic oscillations from accreting neutron stars provide information about neutron star masses, radii, temperatures, ages and internal compositions.
ASTRONOMY 8 Modern Astronomy 9 Theoretical Astronomy 19 Observational Astronomy 20 Observation of the Solar System 27 Observation of the Sun 41 Observation of the Earth 60 Observation of the Stars 75 Observation of the Pulsars 87 Observation of the Galaxies 89 Observation of the Quasars 92 Physical Cosmology 93 3.
(1) the 1967 discovery of pulsars which were initially thought to be potential extraterrestrial broadcasts, (2) the 1977 Wow signal, which was also thought to be potential extraterrestrial broadcasts, (3) the 1996 discovery of potential fossilized extraterrestrial microbes in a meteorite of Martian origin, (4) the 2015 discovery of periodic dimming around Tabby’s Star which was thought to potentially indicate the presence of