What lies at the heart of this unusual-looking spiral galaxy? The galaxy NGC 4102, featured in this ESA/Hubble Picture of the Week, is home to what astronomers call an active galactic nucleus. Active galactic nuclei are luminous galactic centres powered by supermassive black holes that contain millions to billion times the mass of our Sun.

Do you know that reality only exist when we look at it?

Atoms form a world of potentialities or possibilities rather than one of things or facts. - W Heisenberg

Several different telescopes, both on the ground and in space, have taken images of the galaxy by taking a series of pictures in different directions – a bit like taking a panoramic picture with your camera or phone.