• Thumbnail for Galactic Radiation and Background
    Galactic Radiation and Background (GRAB) was the first successful United States orbital surveillance program, comprising a series of five Naval Research...
    16 KB (1,610 words) - 19:52, 21 April 2024
  • Thumbnail for Cosmic microwave background
    The cosmic microwave background (CMB or CMBR) is microwave radiation that fills all space in the observable universe. It is a remnant that provides an...
    104 KB (12,487 words) - 00:09, 22 May 2024
  • Thumbnail for Dogleg maneuver
    the desired orbit. Galactic Radiation and Background (GRAB) was a series of five Naval Research Laboratory electronic surveillance and solar astronomy satellites...
    4 KB (393 words) - 00:46, 29 February 2024
  • Thumbnail for SOLRAD 1
    SOLRAD 1 (section Background)
    scientific package aboard the satellite provided cover for the Galactic Radiation and Background (GRAB) electronic surveillance package, whose mission was...
    30 KB (3,129 words) - 22:50, 10 October 2023
  • a screenshot application Grab (tool), a mechanical device Galactic Radiation and Background, or GRAB, a series of electronic signals intelligence satellites...
    1 KB (198 words) - 10:03, 29 April 2024
  • Thumbnail for Cosmic ray
    3 eV/cm3, the galactic magnetic field energy density (assumed 3 microgauss) which is ≈0.25 eV/cm3, or the cosmic microwave background (CMB) radiation energy...
    96 KB (10,537 words) - 14:23, 6 May 2024
  • Thumbnail for SOLRAD 2
    SOLRAD 2 (section Background)
    package aboard the satellite provided cover for the GRAB (Galactic Radiation and Background) electronic surveillance package, the mission of which was...
    23 KB (2,532 words) - 17:50, 9 March 2023
  • Thumbnail for History of radiation protection
    history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial...
    266 KB (33,050 words) - 14:11, 21 May 2024
  • Thumbnail for Cosmic Background Explorer
    goals were to investigate the cosmic microwave background radiation (CMB or CMBR) of the universe and provide measurements that would help shape our understanding...
    34 KB (4,023 words) - 18:16, 1 January 2024
  • rays and the decay of radioactive isotopes are the primary sources of natural ionizing radiation on Earth, contributing to background radiation. Ionizing...
    60 KB (6,551 words) - 00:51, 15 May 2024