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X-ray astronomy
(Encyclopedia)X-ray astronomy, study of celestial objects by means of the X rays they emit, in the wavelength range from 0.01 to 10 nanometers. X-ray astronomy dates to 1949 with the discovery that the sun emits X ...radio-frequency identification
(Encyclopedia)radio-frequency identification (RFID), a technology that uses radio waves to transmit data and uniquely identify an animal, person, or thing. An RFID system typically consists of a tag and a reader. T...Radio Frequencies (table)
(Encyclopedia)Radio Frequenciescoma, in astronomy
(Encyclopedia)coma, in astronomy: see comet.Eros, in astronomy
(Encyclopedia)Eros, in astronomy: see asteroid. ...Hermes, in astronomy
(Encyclopedia)Hermes, in astronomy: see asteroid. ...Icarus, in astronomy
(Encyclopedia)Icarus, in astronomy: see asteroid. ...Charon, in astronomy
(Encyclopedia)Charon, in astronomy, the natural satellite, or moon, of Pluto. ...Naiad, in astronomy
(Encyclopedia)Naiad, in astronomy, one of the natural satellites, or moons, of Neptune. ...Larissa, in astronomy
(Encyclopedia)Larissa, in astronomy, one of the natural satellites, or moons, of Neptune. ...Browse by Subject
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