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What is the oldest part of our galaxy?

Answer 1

The Globular Clusters found mostly in the halo surrounding the core of any big galaxy are the most ancient structures found within any galaxy, including our own.

The term "globular structure" refers to a dense collection of roughly spherically distributed stars. All globular clusters are red in color, meaning that only small stars remain active within them; massive, blue stars are absent. Since low mass, red stars live long lives and massive, blue stars die quickly, the presence of only red stars indicates that the globular clusters must be very old, with all non-red stars having died by now. The estimated age of globular clusters in the Milkyway Galaxy is approximately 12 billion years.

Globular cluster ages in the Milky Way galaxy are estimated at https://tutor.hix.ai

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Answer 2

Ariana Acosta

The galactic halo, which houses some of the Milky Way's oldest stars, is the oldest region of our galaxy.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.