Scientists have discovered an enormous amoeba-like structure 200 million-light years wide and made up of galaxies and large bubbles of gas; they now think is the largest known object in the universe. How big is it really?

Let's just say that the galaxies that they have found in the composition of the blob is packed four times closer than the universe's average. And the gas bubbles found inside it are 400,000 light years across. That is twice the diameter of the Andromeda Galaxy. One of the existing theories about these bubbles is that they will one day give birth to new galaxies.

"Something this large and this dense would have been rare in the early universe," said study team member Ryosuke Yamauchi from Tohoku University. It is aligned along three curvy filaments that is believed to have came into existence after the theoretical Big Bang.

"The structure we discovered and others like are probably the precursors of the largest structures we see today which contain multiple clusters of galaxies," Yamauchi said.