Astroed

This is the first ever image of the black hole at the centre of our Milky Way, called Sagittarius A*: isn't it just glorious?😀😎 🥳The observation with the Event Horizon Telescope improves our understanding of the processes at the galactic centre. Read more here: https://www.mpg.de/18631097/an-image-of-the-black-hole-of-the-milky-way

It's birthday of , the man who discovered the --

Hubble’s work produced a dramatic change in people’s beliefs about the universe, proving it is home to galaxies besides the .
Hubble showed we live in a universe of many galaxies separated by immense distances, each an isolated ‘island universe.’ Just as caused an epochal change when he removed Earth from the center of the solar system, Hubble did so too when he removed our galaxy from the center of the universe.
Hubble’s signals that the farther away another galaxy is, the faster it is moving away from us. Most scientists believe this means we live in an expanding universe.