Hubble telescope spies mysterious celestial object that defies classification
The Hubble Space Telescope has imaged celestial object Z-229-15, which is simultaneously classified as a Seyfert galaxy, an active galactic nucleus (AGN), and a quasar.
TroibNews 
The Hubble Space Telescope has imaged celestial object Z-229-15, which is simultaneously classified as a Seyfert galaxy, an active galactic nucleus (AGN), and a quasar.
