Publications of the Astronomical Society of the Pacific Vol. 121, No. 878, 2009 April The Origin and Shaping of Planetary Nebu... ABSTRACT.Planetary nebulae (PNs) are circumstellar gas ejected during ...
The James Webb Space Telescope has identified dozens of Jupiter-mass binary objects (JuMBOs) in the Orion Nebula ... ejected planetary systems, or a mix of both. Simulations repl ...
Since then, thousands more have been identified and described in surveys like the Abell Catalog of Planetary Nebulae and the Messier catalogue. Nebulae are mostly found within galaxies ...