At this core is the “Boötes Supercluster”, which is surrounded by a massive void also called the “Great Nothingness”.

The galactic bubble is located 820 million light-years from our Milky Way Galaxy, which may seem far when you consider that this is the distance that light can travel at a speed of approximately 300 thousand kilometers per second in 820 million years.

But astronomers still consider this a “nearby universe.”

The structure is truly gigantic. The bubble is estimated to be a billion light-years across, about 10,000 times the size of the Milky Way.

The crust also contains other superclusters of galaxies that astronomers have already observed. These include Sloan’s Great Wall, a massive cosmic “wall” of galaxies.

According to Daniel Bomaredi, the discovery of the bell is part of a long scientific process, which confirmed a theory put forward by the American astrophysicist Jim Peebles.

Peebles discovered that in the early universe—which then consisted of a hot soup of plasma—sound waves were generated by gravity and radiation, so-called baryonic acoustic oscillations (BAO).

When the sound waves traveled through the hot plasma, they created bubbles inside it. The process stopped when the universe cooled and the bubbles froze.

Astronomers have discovered signs of BAOs before, in 2005, when they looked at data from nearby galaxies. But the newly discovered bubble is the oldest known individual of the BAO species, according to scientists.