
‘Here is the letter that has destroyed my universe’ and 4 more astrophysic revolutions
On this day, on April 25, in 1929, the world learned how astronomer Edwin Hubble had discovered that the universe was much larger than we believed. On this day in 2025, you can book a book and in 29 learn about this and four other astrophysics discoveries that changed the way we see the universe,…