The Fermi Paradox: Galactic Habitable Zones
Science & Futurism with Isaac Arthur
00:00
The Difficulty of Identifying Dwarf Galaxy Core Remains
The Milky Way and Andromeda each contain more mass than all the other galaxies in our local group. Omega Centauri, the biggest known globular cluster, is suspected of maybe being a core remnant of a disrupted dwarf galaxy rather than a globular cluster. If it is at 16,000 light years away from us it would be the closest dwarf galaxy. The galactic central bulge is very dense, containing roughly 10 to 20 billion solar masses,. but while the centers where a lot of the new stars form, the bulge is mostly made of old stars over 9 billion years old.
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