The top 5 astronomical discoveries of all time (so far)

[GCoyote]

A nice quick summary by Paul Sutter

https://arstechnica.com/science/2024/03 ... -all-time/

[Gfamily]

I think I'd have left off Black Holes and included the discovery that Stars are mostly made of Hydrogen and Helium. It's less than 100 years since Cecilia Payne submitted her PhD thesis that correctly used the intensity of the Spectral Lines in the sun and Saha's theory of ionisation to determine that the Sun's composition is 75% Hydrogen and most of the rest being Helium.
Previously, astronomers had overestimated the presence of heavier elements owing to their relative dominance in the Solar Spectrum

[Graeme1858]

That's a good read Gary.

Paul Sutter did a similar podcast, which was, also good.

Graeme

[OzEclipse]

Very good read. Thanks for finding and sharing that!
Joe

[messier 111]

thx for the link .