Our Galaxy May Be 10 Times Bigger Than We Thought

The video explores the complexities of measuring the Milky Way's size, highlighting the challenges of studying our galaxy from within. It discusses the role of dark matter and the methods used to define the galaxy's boundaries. Recent findings from the Gaia Space Telescope suggest a smaller mass than previously thought, prompting further research. The video emphasizes the ongoing quest to accurately determine the Milky Way's size, with future updates expected from Gaia and the Rubin Observatory.

What significant update did the Gaia Space Telescope provide regarding the Milky Way's mass?

What are the implications of the Milky Way's mass being estimated at 200 billion times that of the Sun?

Discuss the potential reasons for the discrepancy in dark matter ratios between the Milky Way and other galaxies.