Galactic Nucleus

Galactic Core

An ellipsoidal mass of stars and interstellar matter that occupies the central regions of a spiral galaxy. In our own Galaxy, it is some 30,000 light years across, and is occupied primarily by older orange and red stars. There is evidence to suggest that a massive black hole lies in its central regions, and indeed this may be a common feature of spiral galaxies in general.

Location of the Galactic Centrepoint

If the Galactic Nucleus was visible from Earth, it would appear as a narrow ellipse stretching over some 42° between Ophiuchus and Scorpius. The central point of the Nucleus lies in Sagittarius, beyond the faint star 3 Sagittarii.

Location of the Galactic Nucleus

The Solar System lies in one of the outer arms of the Milky Way Galaxy, approximately 27,000 light years out from the Galaxy's core.

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