NASA shows how the universe was discovered and the rise of other galaxies | – The Times of India
The discovery that the universe extends beyond the Milky Way galaxy was a pivotal moment in astronomy. In 1925, astronomer Edwin Hubble identified a Cepheid variable star, known as V1, in the Andromeda galaxy, then considered a nebula. This observation, made using the 100-inch Hooker Telescope at Mount Wilson Observatory, provided the first definitive measurement…
