• Thumbnail for NGC 6818
    The Little Gem Nebula or NGC 6818 is a planetary nebula located in the constellation of Sagittarius. It has magnitude 10 and oval diameter of 15 to 22...
    3 KB (266 words) - 18:38, 18 January 2024
  • Thumbnail for NGC 6782
    NGC 6782 is a barred spiral galaxy located in the southern constellation of Pavo, at a distance of approximately 173 megalight-years from the Milky Way...
    7 KB (532 words) - 19:23, 13 April 2024
  • Thumbnail for NGC 6509
    NGC 6509 is a spiral galaxy in the equatorial constellation of Ophiuchus. It was discovered on July 20, 1879 by the French astronomer Édouard Stephan...
    6 KB (381 words) - 17:11, 28 August 2024
  • tumor tracking using robotic couch". Medical Physics. 39 (11). Wiley: 6957–6967. Bibcode:2012MedPh..39.6957B. doi:10.1118/1.4758064. ISSN 0094-2405. PMC 3494731...
    398 KB (38,862 words) - 15:05, 21 November 2024