New Faint Nebulae, 'Ghosts,' Revealed in Cassiopeia Constellation

Using 100 hours of observation and a specialized oxygen filter, astronomers have captured three faint nebulae, dubbed 'New Ghosts,' hidden in the Cassiopeia constellation. These newly discovered objects, appearing as blue phantoms, reveal the presence of ionized oxygen. Their origins remain a mystery, with possibilities including compressed material from the multi-star system γ Cassiopeia or a planetary nebula.