Thursday 4 August 2022

local group (10. 036)

The relatively nearby and sizable galaxy called Dwingeloo 1 evaded detection until this day in 1994 owing to its location in the so called Zone of Avoidance—Zone of Galactic Obscuration, that part of the sky covered up by the light and dust of the plane of the Milky Way—by an operation ran out of a radio observatory in the northeast Netherlands called the Dwingeloo Obscured Galaxy Survey (DOGS) which filled in more gaps in the map of the firmament by filtering by differing radio wavelengths (the foreground stars and dust clouds absorb visible light). Two other more massive and close by galaxies that occupy this same blindspot were discovered in 1968 by pioneering infrared astronomer Paolo Maffei—whom has two namesake galaxies in the constellation of Cassiopeia which if not blocked by our ZOA would be among the brightest and biggest objects in the night sky.