Unimaginably powerful sources of radio emissions, brighter than entire galaxies, quasars were initially viewed as mysterious objects found billions of light - years from us but unknown in our own galactic neighborhood. (discovermagazine.com)
Over 300 extrasolar planets have been discovered in orbit around stars in our local galactic neighborhood, and more planets are being discovered every month. (ucolick.org)
These occurrences were once considered impossible, but they have turned out to be common in certain galactic neighborhoods (scientificamerican.com)