Dragonfly on Nostr: Today I learned it was a woman who made it possible for us to finally understand that ...
Today I learned it was a woman who made it possible for us to finally understand that the Universe consists of more than our own Milky Way galaxy.
Henrietta Swan Leavitt discovered pulsating stars, called Cepheid variable stars.
https://en.m.wikipedia.org/wiki/Henrietta_Swan_Leavitt
This concept allowed other astronomers to observe and measure the distance of other galaxies.
I'm almost 70 years old, and consider myself to be reasonably well educated. You can still teach an old dog.
Henrietta Swan Leavitt discovered pulsating stars, called Cepheid variable stars.
https://en.m.wikipedia.org/wiki/Henrietta_Swan_Leavitt
This concept allowed other astronomers to observe and measure the distance of other galaxies.
I'm almost 70 years old, and consider myself to be reasonably well educated. You can still teach an old dog.