What are the chances that our galaxy will collide with an...

What this episode covers

For over a century, astronomers believed the Andromeda galaxy was on a collision course with the Milky Way, set to merge in 4–5 billion years. Hubble data supported this forecast. However, a new study—using updated data from Hubble and the Gaia space observatory—suggests the odds of a Milky Way-Andromeda merger are now closer to 50/50. Guest: Dr. Till Sawala - University Researcher in the Theoretical Extragalactic Astrophysics Group at the University of Helsinki and at the Institute for Computational Cosmology at Durham University Learn more about your ad choices. Visit megaphone.fm/adchoices

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Frequently Asked Questions

How long is this episode of Mornings with Simi?

This episode is 9 minutes long.

When was this Mornings with Simi episode published?

This episode was published on June 4, 2025.

What is this episode about?

For over a century, astronomers believed the Andromeda galaxy was on a collision course with the Milky Way, set to merge in 4–5 billion years. Hubble data supported this forecast. However, a new study—using updated data from Hubble and the Gaia...

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