Hubble Took A Beautiful Photo Of A Barred Spiral Galaxy

55 million light years away

NGC 4394, The Archetypal Barred Spiral Galaxy

NGC 4394, The Archetypal Barred Spiral Galaxy

NGC 4394, the archetypal barred spiral galaxy, as seen this week by Hubble.NASA

Hubble is still teaching us so many years later. Case in point: today the telescope team tweeted a beautiful shot of a barred spiral galaxy. This one is not new--it was discovered in 1784 by German-British astronomer William Herschel.

NGC 4394 is located about 55 million light years from Earth in the Virgo Cluster. It's in the constellation of Coma Berenices (Berenice's Hair).

What is a barred spiral galaxy? NASA explains:

At the center of NGC 4394 lies a region of ionized gas known as a low-ionization nuclear emission-line region (LINER). LINERs are active regions that display a characteristic set of emission lines in their spectra— mostly from weakly ionized atoms of oxygen, nitrogen and sulphur.

Explore the tweet to learn more: